In 158 a group of English settlers landed near present-day North Carolina. These pilgrims expected wealth and prosperity from the untouched land but instead received famine and hyperthermia. Their eventual fate has been unknown until now.

This third film in the series follows a group of marine biologists attempting to capture a young great white shark that has wandered into Florida's Sea World Park. However, later it is discovered that the shark's 35-foot mother is also a guest at Sea World. What follows is the shark wreaking havoc on the visitors in the park.