A horde of murderous crab monsters descend on a sleepy coastal town on Prom night, and only a ragtag group of outcasts can save the day.

An ordinary family goes on a trip by car, but their car breaks down. The dutiful father of the family immediately sets off to get help and seems to find…

When a single mother and her two young children are tormented by an increasingly strange and intense presence in their quiet suburban home, she turns to her scientist boyfriend to…