In a dystopian near-future, undercover detective Bob Arctor infiltrates a group of small-time drug users to track down the sources of a dangerous substance called Substance D. As he delves deeper into the case, Bob's identity begins to blur and he starts exhibiting erratic behavior, prompting him to undergo mental evaluations at the New Path Corporation recovery center.

A Scanner Darkly
A cop's undercover mission to take down a deadly drug turns into a desperate struggle as he becomes addicted, jeopardizing his sense of self.