Rainbow Brite and the Star Stealer

Rainbow Brite and her magical horse Starlite must stop an evil princess and her underlings from taking over the planet Spectra. When they meet Orin, a wise Sprite tries to make Rainbow and two children work together to stop the evil Princess. The duo's mission is hindered by Murky Dismal and his bumbling assistant Lurky, who are trying to steal Rainbow's magical color belt.