A dead principal's soul becomes the prize in an unlikely competition. Heaven and Hell both claim it after a system error books him for both, but he refuses to move on until his music school, famous for producing countless stars, is taken back from the scheming board chairman who seized it after his death. His offer is simple: whoever does more to help reclaim the school earns his soul. Angels and demons, already keen on becoming idols, happily accept. Now three angels and three demons are on Earth going through idol training, alongside three ordinary girls who are chasing the same dream of idol stardom.