It’s the tip of the world. A flood is coming. Luckily for Dave and his son Finny, a few clumsy Nestrians, an Ark has been constructed to avoid wasting all animals. But because it seems, Nestrians aren’t allowed. Sneaking on board with the involuntary assist of Hazel and her daughter Leah, two Grymps, they assume they’re protected. Until the curious children fall off the Ark. Now Finny and Leah battle to outlive the flood and hungry predators and try to achieve the highest of a mountain, whereas Dave and Hazel should put apart their variations, flip the Ark round and save their children. It’s positively not going to be easy crusing.