|Airdate||March 12, 2000|
Neptune is a single BrainPOP movie aired on March 12, 2000.
Tim answers a letter about Neptune, a planet in the solar system. Tim is using a film projector and Moby uses a telescope, Tim is looking at Neptune with his film projector at night. In the end of the movie, Moby's hand turns into a freeze ray and freezes Tim, Moby leaves Tim alone without unfrozen.