When their car dies in the middle of a terrible rainstorm, it seems like luck is on their side when they find an old, abandoned mansion for shelter. But the relief doesn't last long. The front doors lock behind them, and every hallway leads right back to where they started. Trapped in a never-ending circle, the house begins to shift, twisting time itself backward to a party from a hundred years ago. And the scariest part? Someone is frantically pounding on the front door from the outside, begging to be let in. And it sounds exactly like Leo.