In the dead of winter, a musician travels to a remote cottage to work on new material but soon finds herself under attack from a mysterious dark presence.

洛杉矶又受到怪物的袭击，这次袭击的怪物力量远比它们的前辈更为强大，整座城市陷入了恐慌之中，罗素博士临危受命,带领着冲锋队奋起迎战。