The story:
Tomm's and Rex' hard studies are rewarded by the Phantom with a visit to Eden, and this time a special surprise lies in store: the arrival of two new dolphins, Solomon and Nefertiti.

The trio enjoys a brilliant day in the animal paradise, mainly honing their riding skills on the dolphins inside the reef separating the island area from the lagoon, but when the gate accidentally opens and one of the dolphins dashes out with Rex water-skiing behind, recreation turns to a desperate fight for survival...