Flashback

Fred Fitzell (Dylan O'Brien) is haunted by vivid flashbacks of his high school days, specifically a girl named Cindy Williams who vanished under mysterious circumstances. As he delves deeper into his memories, Fred reconnects with old friends and discovers that the key to stopping his visions lies in a mysterious drug called Mercury. Through a mind-bending journey through time, Fred must confront his past and uncover the truth about his own identity and the world around him.