Ant-Man is a superhero film in the Marvel Cinematic Universe, where Paul Rudd portrays the titular character, Scott Lang. Scott Lang is a former thief who becomes the Ant-Man after being recruited by Dr. Hank Pym. The movie combines action, humor, and a touch of heist elements as Scott Lang learns to harness the power of the Ant-Man suit and help save the world. Paul Rudd's charismatic performance adds a unique charm to the character, making Ant-Man an enjoyable and entertaining film.