Loud and crazy Milo and the anxious cow Oscar are siblings and the closest friends of the overly dramatic Bea. They attend Sweetwater High School along with their quirky classmates, including the annoying Clamantha. Their lives revolve around the aquariums in a pet shop, but their concerns are the usual teenage topics: love, friendship, dating, and of course, giant lobster attacks. Meanwhile, they are coached by teachers like the testosterone-fueled Mr. Mussels and the more academic Mr. Baldwin.