Watched this because I wondered if it had the same plot as The Substance – not really! Sebastian Stan is an Adam Pearson-looking pathetic guy with a tentative friendship with hot playwright neighbor Renate Reinsve, then gets revolutionary medical treatment causing him to look like Sebastian Stan, changes his job and identity, then tries to get cast as his former self in the play Renate wrote about her ex-neighbor’s life. This is going fine for Stan until the real Adam Pearson shows up oozing charisma and steals his role and his girl. Plot hole: Renate doesn’t recognize Adam despite having a Chained For Life poster in her living room.