Simmons, the manager of a seaside hotel in California, has a problem: Guests are turning up dead, and Sgt. Ramsey, the hotel's detective, has no information as to the identity of the murderer. The only thing anybody knows is that the killer wears a strange mask and has a fondness for blonde women. As Ramsey tracks down a list of suspects that includes the hotel handyman, Lisa, the hotel's lounge singer, finds herself in danger.

In the 23rd century, inhabitants of a domed city freely experience all of life's pleasures — but no one is allowed to live past 30. Citizens can try for a chance at being "renewed" in a civic ceremony on their 30th birthday. Escape is the only other option.