A group of aliens are sent to Earth, disguised as a human family, to experience and report life on the third planet from the sun.

作家本·米尔斯回到他儿时的故乡——撒冷镇，为他的下一本书寻找灵感，却发现他的家乡正被一个嗜血的吸血鬼掠夺。