在海滩打了一天艰苦的排球后,一位父母不在的青少年决定和她的女朋友们开一个睡衣派对。不出所料,他们的男朋友会出现来吓唬他们,但也可以看到一个从海滩来的陌生人潜伏在房子周围。很快,这个团队开始经历自然减员的问题。After a hard day of volleyball at the beach, a teen whose parents are away decides to have a slumber party with her girlfriends. Their boyfriends predictably show up to scare them, but a stranger from the beach is also seen lurking around the house. Soon the group begins experiencing an attrition problem.