A scuba diving instructor, her biochemist boyfriend, and her police chief ex-husband try to link a series of bizarre deaths to a mutant strain of piranha fish whose lair is a sunken freighter ship off a Caribbean island resort.
A team of astronauts is sent to the moon to rescue an alien who is seeking help to save her dying race. They are attacked by a force of bandit robots and discover that enemy spies are out to kill the alien.
A forty-year-old employee marries a seemingly quiet girl who turns into a mantis after the wedding.
