In November 1984, the Soviet Union's best submarine captain, in a new undetectable sub, violates orders and heads for the U.S. The American CIA and military must quickly determine: Is he trying to defect, or to start a war?

The alien criminal from the first movie is dead, but he left a few eggs which are hatching now. The good alien, who still inhabits Tom Beck's body, has been waiting just in case this happened. Unfortunately, his presence in the body has taken a terrible toll on it, draining it of life energy. Additionally relations with Beck's daughter Juliet (now a cop) have deteriorated. But when the killing starts again, they will need to work together to stop the new generation of aliens.

An ex-Navy Seal turned cook is the only person who can stop a group of terrorists when they seize control of a U.S. battleship.

In November 1984, the Soviet Union's best submarine Captain in their newest sub violates orders and heads for the U.S. Is he trying to defect or to start a war?