Vik remembers the day he met Oto, Mai and Yoko. It's the park opening, and, being shy, Vik is avoiding all the other kids. Oto and Mai invite him to play trains with them. At first, they're just three kids playing trains, but something strange starts to happen; all at once, the three kids find themselves inside a "real" train zooming through the park, and taking off into outer space. How can this be happening? They reach a planet where, finally, they meet Yoko, the magical author of their adventure but they believe that Yoko is an alien who wants to attack them; this hurts Yoko's feelings. In the end, they see that the furry giant only Wants to play with them. It's the start of a beautiful friendship.

When Mai loses her badminton racquet in the Lake, Ranger Loops tells the children the legend of the Monster of Lake Wawa. "Don't worry, it's just a story," she tells them. But Together with Yoko they go on an underwater quest in order to find out what the monster looks like. After several close calls, and some mysterious they finally find the monster, and discover it's not a monster at all - it's the "monster" that's been helping them on their journey. And in the end, they've made a great new (orange, many-armed) friend.

"Ranger Loops brings her niece, Patty, to spend the day in the park. The kids, of course, are excited to spend the day with her, but Patty doesn't seem so sure. And the harder they try to get Patty to play with them, the less sure she seems. They're determined, however, and with Yoko's magical help, they do their best to impress the new kid, only to find that Patty's not being difficult - she's simply shy, a feeling that Yoko can certainly understand."

Today the kids decide to pretend that they're camping. It all seems like fun at first, until Mai's very specific ideas about that begin to get in the way. Oto, Vik and specially Yoko seem unable to follow her "rules." Finally, after things seem to fall apart, Mai begins to see that when you're playing together, it's more fun if everyone has a say in how you play.

Mai works hard building a great sandcastle that she'd just like to protect it from getting wrecked. The boys think she's being a spoilsport; Oto and Vik just want to play something imaginative and fun. Thanks to Yoko's magic, Mai gets to have her castle all to herself - and it's life size. Very quickly, however, she begins to miss her friends. The only problem is, in their desperation to keep the castle safe, Yoko hasn't included a way in - or out. In the end, it'll take their combined imaginations to find a way out of Mai's castle.

Vik brings his brand new ball to the park. The friends are excited to play with it, but it's so beautiful that he doesn't want anyone touching it. Oto and Mai think that if they can just somehow get Vik to kick the ball with them, Vik will realize that he also wants to play. But Vik takes his friends' attempts as an attack on his ball, and he asks Yoko to help protect his shiny prize. Both sides start a game in which Yoko uses his magic to build sophisticate security systems, and Mai and Oto use their inventiveness and "super-spy Skills" to finally get Vik to let them play with his new ball.

Oto decides the gang will play Tag today. And why not; He never loses. Game on. Oto corners Mai on the climbing tower. She tries to talk her way out. "You can't tag me. I'm on a rocket...in space!" Oto just shakes his head. Yoko feels for the underdog Mai. He magically turns the climbing tower into a spaceship and Mai does indeed fly into space. Oto's not happy. He gets Yoko to turn a tree into a super-fast rocket. With Vik and Yoko aboard, Oto's pursues Mai's at high speeds in and out of clouds and to the moon. Then, the ships zoom into a hale of asteroids. They're both hit. Facing each other as their ships plummet to earth, Oto and Mai recover their perspective and friendship and Yoko STOPS the ships, just before crashing.

Oto, Vik and Mai are playing pirates today. Oto is ever the swashbuckler, Vik is into the ships, while Mai thinks it's all about the eye patches. When Yoko produces an interactive, magical map - there's one thing they can all agree on. Being a pirate is all about The TREASURE!. And there are treasures all around you - you just have to look .

The kids head to the beautiful Meadow Gigantico to play tag - when they discover the meadow isn't all that beautiful anymore. Overnight somebody has completely trashed the place - literally - and now the park's most pristine corner is covered with garbage. Poor Ranger Loops will never have a chance to clean it up all by herself. With Yoko's help the clean up turns into a game that leads to something Different from their initial expectations, including finding out who caused that mess in the first place.

Ranger Loops is preparing a box of old items for recycling. Mai suggests playing with some of the broken toys in the box before they are delivered, but Oto thinks that it is silly playing with broken toys. Yoko feels badly for the broken toys, so he makes his magic and turns the three friends into the broken toys themselves, while he takes the shape of the old box. Ranger Loops appears in the meadows and takes the box, leaving the three broken toys in the ground at the other side of the lake. The three friends have to work together to reach the cabin and get Yoko to change them back before the truck Comes to collect the box.

"Mr. Tuttle, a special zoologist, visits Yoko Park. He believes there are strange and unusual creatures in the world that have yet to be discovered. "And one of them might live in this park!" The kids are quite concerned that Tuttle will discover Yoko and take him to a special zoo. It will take some doing to keep the carefree Yoko from the dogged and ever-curious Tuttle. But, with some clever games, Oto, Vik and Mai keep their friend occupied and out of Mr. Tuttle's trap."

Vik doesn't seem to enjoy playing in the snow quite as much as Mai, Oto and Yoko. He doesn't know how to play any winter sports. Everyone thinks ice-skating will be the right winter sport for Vik. At the lake, they try to get him to ice dance and play hockey but Vik just keeps falling down. Vik is about to give up hope when Ranger Loops discovers that Mai and Oto forgot to teach Vik the basics of skating. This changes everything.

Oto and Mai walk to the meadow, where they are supposed to meet Vik. But from the distance they see that their friend is playing blind-man's bluff with - can it be? -- other kids. Mai and Oto get jealous, thinking that Vik prefers his new friends. Yoko appears and the three friends play an incredible Red Light Green Light game to attract Vik. One by one they attract all the kids that are playing with Vik, except Vik, who keeps waiting in the meadows. Oto and Mai decide to talk with Vik and he explains them that he is there because he had a rendezvous with his best friends: Mai and Oto. The three kids go to play Red Light Green Light with their new friends.

It's the summer and very, very hot. Too hot to play, it seems. But Yoko's not having it; he creates a Winter Wonderland and the "Race to the Pole" begins. It's Yoko and the children against a team of squirrels. Who will be the first to reach the Pole? One, two, three, go-o-o. It's all about winter sports. But in the end, the winner is not anyone they're expecting.

Mai, Oto, and Vik are talking about pets. They would all really like one, but Ranger Loops warns them that pets are "a big responsibility," which is, of course, exactly what their parents are always saying. The ranger suggests they try drawing some pets instead. They each draw their "perfect pet" - a cat, a parrot and a unicorn. And Yoko, inspired, turns a nearby sparrow into a wild and wonderful hybrid of all three. The kids are thrilled at first, but they quickly learn, however, that having a pet really is a big responsibility.

Mai, Vik and Oto are playing with little plastic dinosaur toys in the park's sandbox. When Yoko joins the game, he makes the toys real dinosaur size animals and transforms the whole park into Jurassic land. But the children get competitive, determined to figure out whose dinosaur is the best. After a series of games, competitions and funny moments, they lose their dinosaurs - only to find them having a very nice time together - away from all the disagreements. The children realize that they haven't been as nice to one another as they should have been. And agree that it's time to stop.

Oto, Vik and Mai are all having a great time making and flying paper airplanes in the park today. Vik's does tricks, Oto's goes fast. Mai is insecure about the plane she's made, but they all quickly recognize that her plane is the only one that can truly do it all. The only problem is that it flies so well, it starts flying away. It's the best plane ever, and they simply can't lose it. With Yoko's help, the chase is on. The kids zoom after the plane dodging trees and flocks of geese. It's quite the odyssey, but when all is said and done, Mai realizes that if she was able to make one great plane, she can always make another.

Ranger Loops has given the children a task - paint a birdhouse she's just finished making. The kids are excited, but soon run into a problem. They can't agree which colour to paint it. One wants yellow, one red, and one blue. When Yoko joins them, they decide on a contest to see which color they'll paint it. Whoever finds the most examples in the park of their colour wins. The game gets out of the control. The children end up dividing the park into their favourite colour zones. Luckily there is always room to compromise.

Vik, Oto and Mai determine that today, they're going to have a race in the park. Sounds like fun. Each of them brags that they're sure to be the winner. But when Yoko takes their race to a whole new level with vehicles that mirror each of their points of view on the race, they're put to a serious test, and they have to choose between winning at any cost and helping their friends.

It's a rainy day in the Yoko park, and the children find themselves sheltering in Ranger Loops cabin without anything to do. They find some old board games, and Vik, excited, tries to convince them to join him in playing them. The kids are sure they'll be unbearably boring...until Yoko comes and turns the games into a real adventure. When the rain finally stops, the kids are so into the games, they don't even notice.

Oto and Vik are playing heroes, and they're continually casting Mai in the role of "damsel in distress." But Mai wants to be a hero as well. And when Yoko brings their adventure to life with a huge Pyramid complete with Indiana Jones-like booby traps and mummies, the boys quickly find out that Mai can be a hero as well.

The children promised Ranger Loops they would create a flowerbed for the upcoming flower festival and, just fooling around, Vik invents a robot to "help" them. Unfortunately it's made of cardboard, and isn't much help at all - Until Yoko comes and makes it the best "Helpbot" in the whole universe ever. At first, it's all good; Helpbot creates a very orderly (but not terribly imaginative) flowerbed for the festival. Things go awry as Helpbot's "programming" makes him do absolutely everything for the kids - including play. In the end, they decide to redo the flowerbed for themselves...it's much more fun that way.

Mai brought her camera to the park, and she wants to play Safari today. Ranger Loops thinks this is a great idea, and encourages them to find all the different types of wildlife in the park. The three friends set out together, but to their dismay, they seem to run out of animals to observe very quickly. There are squirrels, ravens, a few ducks...and not much else. The Ranger is surprised at them. "Look closer," she counsels. Oto, sensing that she means "creepy-crawlies," is none too excited. He's doesn't like bugs so much. But Yoko, inspired by this, decides to "help" the kids to look closer - by shrinking them all to tiny size. Instantly, they can see the park is teeming with wildlife.

Mai, Oto and Vik think they've played everything there is to play in the park. They get bored, idly pushing toys around in the sandbox. But when they lose their toy, Yoko arrives to help. He scales the children down and off they go to find their little toy car. But Yoko gets distracted and loses sight of them. Uh-oh. The children and Yoko end up on a crazy adventure with huge squirrels, races in the desert, and being lost in a jungle of grass. Will they find each other before it's time to go home?

Oto, Vik, and Mai are playing a game of climbing the swing to retrieve a ball. Marisol decides to lend them some costumes to play with, but first they'll have to learn that clothes don't make a person.

Vik comes up with the idea to play circus. Mai, Oto, and Yoko are very keen on it, and each of them finds a perfect role...except Vik. He tries and tries to find something he can do, but he just keeps failing. Luckily, when things start to go wrong in the performance, Vik discovers the circus thing he is good at. After all, as Ranger Loops says, "everyone is good at something!"

Ranger Loops has a big surprise in the park today: a petting zoo. When the truck arrives with the animals, Loops asks the children to look after things for a moment while she goes to the shed to gather some necessary supplies, as a busload of children is about to come for a visit. Vik, Oto and Mai are sure they can handle this, no problem. But as soon as Loops is gone, Yoko allows the animals to escape. The kids are in a panic, and Yoko, fun-loving as ever, uses his magic to turn the whole situation into a full-on cowboy and cowgirl

The three kids play house with Yoko. As soon as they start playing the three boys start changing everything around, putting the house in crazy places and mixing everything up: at first they propose playing cowboy house, then it is space house; later, they want to play pirate house. Each time, Mai objects; she wants to play house the right way. She gets a little bossy about it, and soon, nobody's having any fun. Finally, she realizes that forcing the others to play her way isn't right, and she tries to loosen up a little - She'll show those boys a thing or two about finding imaginative new ways to play house.

The kids realize that Yoko has never celebrated his Birthday. Mai, Oto and Vik decide to throw him a proper party but keeping it as a secret. The problem is that they are not sure that the present will be good enough, because it is something made by them. Finally when the surprise is revealed and Yoko's Birthday is in full swing, Yoko opens his present.

Everybody's making "sandcastles" in the sandbox. Oto tries to make a building but he goes so quickly that the building collapses again and again. Vik and Mai are more patient and they build beautiful buildings, going step by step. Yoko uses his magic, providing the kids with a magic spade that can build gigantic buildings. Oto has the same problem with the magic spade: he goes too fast and his building collapses again. Finally, with the help of his friends, he understands that he has to go a bit more slowly, taking things step by step.