Finn Wolfhard stars in the horror film 'It' based on Stephen King's novel. He plays the role of Richie Tozier, one of the members of the Losers' Club who are terrorized by the evil clown Pennywise. The movie follows their terrifying encounters with Pennywise as they try to overcome their fears and defeat the ancient evil. Finn Wolfhard's performance in 'It' showcases his talent as a young actor and his ability to bring humor and depth to his character.