Teenage sisters Eden and Lux navigate their competitive relationship over the course of a Halloween party filled with glitter, confrontation, and blackouts.

Blaire hasn't seen Will since the assault, but she's known his every move. Her own paranoia lures her a little too close, when she's spotted by an old friend and pulled into the morning hours of Will's dying party. In the test of who will break first, Blaire must find a way out before her obsessive tracking is revealed, and Will searches for a way to keep her quiet about the truth.