When their youngest daughter, Em (Natasha Calis), becomes strangely obsessed with an antique wooden box bought from a yard sale, parents Clyde (Jeffrey Dean Morgan) and Stephanie (Kyra Sedgwick) see little cause for alarm. However, Em becomes increasingly unstable, leading the couple to fear the presence of a malevolent force. To their horror, Clyde and Stephanie learn that the box contains a dibbuk, a dislocated spirit that inhabits -- and ultimately devours -- a human host.