In Haven of 2085, Arushka rides Moshi, her black mare, through the Riverlands. She's inspecting the contented Animals which she and Noah have transported to the future to avoid extinction. Dolly follows at a distance… But we see the faithful sheepdog distracted and lured away.

-Noah is quick to notice that there is dissent among the Nomads. Now that they're no longer on the run from a common enemy there's a restlessness.

-As dry electrical storms prevail in Haven there is growing concern about the changing climate. Noah devises a plan to harness the lightning, which strokes most often on Razorback Ridge, and so powers his PH-Ts.

Myah makes herself known to Becky and Russell, a clumsy classmate whose suspicion is quickly supplanted by infatuation with the stranger. When the news is conveyed to Noah he realises he must take her back to Haven immediately. But how to escape the detention centre in order to do it? Russell reluctantly agrees to help by taking Noah's place in the cell. Bamboozling the Holocops, Becky smuggles Russell in and Noah out.

Syndia, still fuming, pronounces banishment for Noah when he returns.

There has been no rain in Haven for a long time and Arushka is worried about the animals. While checking up on them she sees Rorden, the most eccentric of Myah's brothers, scurrying out of the rocks below Razorback Ridge. She and Sundance return to the spot to investigate. They discover Rorden's Grotto, filled with weird equipment.

Rorden prepares to send Sundance on an experimental time trip. In a failed rescue attempt, Chip is caught up in the white- light along with Sundance. The two boys arrive in a present day dance club. Chip is fazed by his surroundings, but Sundance finds the rhythm of the music intriguing and has soon caught the eye of a pretty girl.

Drought conditions in Haven are at a crisis point. Desperate to give the precious animals the best chance for survival, Arushka and the Nomads attempt to muster them from the vast, parched high country into the lowlands. A scrub fire breaks out and the frightened animals are scattering when Myah and the brothers appear offering help. Together with the Nomads they manage to put out the fire and herd the animals to a lowland area where there are still a few patches of pasture.

Arushka, Noah and Sundance notice a curious resonance about the Valley. Even Dolly the sheepdog senses it. Noah discovers that the whole atmosphere is electrically charged. Sundance volunteers to swim and discovers a square blue object at the bottom of the lake!

Myah instructs her brothers to co-operate fully in the task of converting the Beast into a rain machine. Old rivalry sparked between Lyal and Sundance. Geneva tells Tod of her misgivings about bringing Thunderstone back into their lives. She's seen how harmful the valuable material can be when it falls into the wrong hands.

Myah tells Noah the truth. She and her brothers stole the precious Thunderstone Cube from the Silver City. As punishment they were banished through time forever. But they secretly rigged the banishment program so it would send them to the very same place and time as the Thunderstone Cube — Haven. Noah realises he's been tricked into furthering the Family's evil master plan. The Beast is now a super weapon, able to rain down destruction anywhere, starting with the Silver City. And since Rorden cant work it, they'll take Noah, by force.

Myah and her brothers hold Becky and her parents hostage. But when Noah is about to give himself up, another Noah enters the grotto. Becky has brought the Noahgram! Myah releases them, believing its the real Noah.

The Nemesis Comet is hurtling past the moon towards Earth. It is so close now it can be seen looming in the skies above the General Store, where the Nomads are refueling the Beast. The Nomads head straight for the Cortillo Plain installation. Sundance, an uneasy rookie driver, steers the Beast across country and through the installation's security fencing. Meanwhile, Myah and her brothers have commandeered a security vehicle and are sneaking past the installation's guards in a more subtle fashion.