Liza Miller, a suddenly single stay-at-home mother, tries to get back into the working world, only to find it’s nearly impossible to start at the bottom at 40-year old. When a chance encounter convinces her she looks younger than she is, Liza tries to pass herself off as 26 and lands a job as an assistant at Empirical Press. Now she just has to make sure no one finds out the secret only she and her best friend Maggie share.

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.