The hidden: An alien parasite with the ability to possess human bodies goes on a violent crime spree in LA, pursued by a human cop and an alien cop inhabiting a human body.

The hidden 2: 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.