When Sara, a world renowned law professor, takes a rag tag bunch of juveniles from the inner city to the Everglades, trouble quickly finds them. Nuclear run-off from a nearby power plant has transformed the native manatees into savage blood thirsty creatures with an insatiable appetite for humans. Luckily, Sara is not alone. With help from a robotic companion J.E.F that she designed in her lab and the town conspiracist Nash they must race against time to save the delinquents from certain doom.