Clyde (Jeffrey Dean Morgan) and Stephanie Brenek (Kyra Sedgwick) see little cause for alarm when their youngest daughter Em becomes oddly obsessed with an antique wooden box she purchased at a yard sale. But as Em's behavior becomes increasingly erratic, the couple fears the presence of a malevolent force in their midst, only to discover that the box was built to contain a Dibbuk, a dislocated spirit that inhabits and ultimately devours its human host.