Hey Arnold! is a cartoon series depicting the lives of Arnold and his friends. The show is set in an inner-city tenement in Hillwood, Washington (USA) and focuses primarily on his experiences as a kid while dealing with the problems he and his friends encounter.
There have been 2 movies based on the series:
Hey Arnold!: The Movie (2002)
Hey Arnold!: The Jungle Movie (2017 for Nickelodeon, Nicktoons, TeenNick viewers; 2018 as an international theatrical release)