Casper; Nightmare; Father Time; Mad Monster Groko; soothsayer
Mad Monster Groko, ruler of the star Astra Minor, sends his warriors to Spooktown to stop the clock and kidnap Father Time. Since Casper and Nightmare were out of range of the town clock they are unaffected, and follow Father Time to Astra Minor in hopes of effecting a rescue.
Groko's horoscope says he will rule the universe in this particular year, so he stops time on December 31 to get the job done. Casper and Father Time are imprisoned, but escape with the help of Nightmare, and retrieve the stolen key to the town clock.