The Spectacular Star Kids III: Collision of Worlds

The Star Kids have become heroes to Seattle. Nicholas and friends decide to take a vacation in the land of Ooo, but discover strange things happening, and the Lich King returns to try and take over Ooo and Earth. The Star Kids must unite with Finn and friends to stop the Lich King as well as a new Rouge's gallery that has one thing in common: Gadd Science Incorporated