Listen to the sound clip SO, IS THE KEY SAFE? from Hey Arnold! The Movie: SO, IS THE KEY SAFE? SO, IS THE KEY SAFE? This sound is from Hey Arnold! The Movie Hey Arnold! The Movie is a 2002 animated adventure-comedy film based on the popular Nickelodeon animated series Hey Arnold!. Directed by Tuck Tucker and produced by Nickelodeon Movies, the film takes fans on a t… Go to the full soundboardwith more sound clips Search