Sequel to the 2007 film that takes place after the events of the first film. The main plot is when the young boy named William who finds the egg of a new water horse after Crusoe dies, brings it home and faces some challenges to keep the water horse a secret, however once William learns there can be one water horse in the world at a time, he decides to take the water horse to his science teacher from school to find some samples to clone the sea monster in order for there to be more water horses than just one.
