An alien black box is found in the South Pole, where a government agency is conducting botanical experiments.

When two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surface: the most menacing beast to ever rule the waters is still alive and mercilessly feeding on anything that crosses its path.

On an out of control train holding hostages and high-tech bio-weapons agent Kristoff (Van Damme) becomes a one man army to derail the terrorists and save the lives of everyone on board!