Gillbert, the young merman prince, and his friends, the telekinetic Anne Phibian and Sherbert the orange turtle journey to the island of Orange Turtles to meet Sherbert's turtle family. But why do they think they're being followed? They soon discover that Sherbert is one of the rarest of the orange turtles--orange with orange spots. What does this mean? How rare is he? Rare enough to catch the attention of the strange Shark Beast and the mysterious Sea Weed creature. But who are these two guys? What exactly are their intentions? Are they friends...or foes? Perhaps the island of Orange Turtles may give us, as well as Gillbert, Sherbert, and Anne, the answers...or some unexpected surprises.