An island off Costa Rica will soon be the world's most ambitious theme park - a dinosaur preserve.

A visionary financier's biotechnology company has succeeded in cloning these extinct reptiles. Fifteen different species, presumably incapable of breeding, are now placidly roaming around, but Jurassic Park's resident mathematician, an expert in chaos theory, predicts that the animals' behavior is inherently unstable. When a rival genetics firm attempts to steal frozen dinosaur embryos, things go haywire.

Two cute American kids, eight-year-old Tina and 11-year-old Tim, a safari guide from Kenya and a Denver paleontologist set things aright - almost.