When a professor of religious studies is forced to investigate why his students are being murdered, he discovers what ended his own life and is then reborn.

It all begins with an anonymous text message with a party invitation. A dozen young men and women gather, eat, drink, party, and have the time of their lives inside the doors of a dilapidated mansion — that is, until it’s time to go. The front door doesn’t open; the back door doesn’t open.