You wake up on a cold bathroom floor with a headache and no memories except a terrible sense of foreboding. Something has happened. Something is happening. Something will happen. Even worse, you figure out you have somehow traveled back in time to the cusp of the 2000s — a Halloween party in 1999. At least the other guests, six singles ready to mingle, welcome you and don't seem to notice anything is wrong. As you grow closer to them, can you discover the dark truth about yourself? Or will your clueless involvement allow the party to take a deadly turn?