Three college friends head out for the biggest party of the year, each looking for something different: sex, love, and a simple human connection. When a mysterious phenomenon disrupts the proceedings, it starts a chain reaction leading to the strangest night anyone has ever experienced. As the party descends into bloody chaos, the three friends must struggle to keep both their relationships and themselves alive. Director Dennis Iliadis (The Last House on the Left) delivers thought-provoking suspense with +1, a supernatural thriller that tests the limits of survival and the loyalties of friendship.