As the Battle of the Bulge rages on, an American tank unit gets trapped behind Nazi lines. With just hours before the bombs of Operation Ardennes Fury fall, the tank’s commander makes the risky decision to rescue an orphanage.

A Semester at Sea ship is attacked and sunk by a mutated two-headed shark, and the survivors seek refuge on a deserted atoll. The coeds, however, are no longer safe when the atoll starts flooding.