Celeste is a psychology student who gets accepted into a secretive program where alternative cognitive therapy methods are developed. Within this framework, trainees can enter the dreams of patients. The program's lead professor invites her to participate in a dangerous and unpredictable experiment, whose risks and consequences are unknown to anyone. When Celeste accepts the job, she has no idea what awaits her as she delves into the infinite subconscious of both patients and her own.