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. Doors that once led to familiar rooms now lead to new ones; some doors open to yet other doors, and some go straight to dead ends. Only one thing remains constant: every door is a trap, leaving only one way out.