Four friends have rented a duplex beach house for a summer vacation at an astonishingly low rate. The house's owner—Lucie Blayze—lives in the unit next door. Although they aren't anticipating seeing her, that changes almost immediately. And she has a very special interest in young, handsome men.

Lucie is an insatiable succubus. She drains men of their masculinity to feed herself. And now Nate and his friends, besides being changed into girls, have to deal with a fifth member of their group who wants nothing but to adore them, please them, and show them some peculiar rituals...