Zenon Kar enters the Galactic Teen Supreme Contest in hopes of winning a chance to attend the Moonstock Festival. She’s torn between her need to beat handsome competitor Bronley and help her friend Sage, an activist desperate to keep the moon from being colonized. During the last competition for the Galactic Teen Supreme contest, the moon goddess Selena appears and threatens to destroy the Earth, so it's up to Zenon and her friends to save the day!