On of the southernmost islands of Japan, there's a dance school 'Orion Dancers Academy'. Hiding its public identity as a training school of singers and dancers, it actually operates as a girl-warrior training school, in order to win independence of the island. The secretly trained agents watch the music video of charismatic idol Cocoe on a huge TV monitor, and unlock codes from her dancing to complete their missions. However, the dark shadow of a rival organization slowly sneaks up on the girls and the training school on the island.

羞涩内向的女高中生桥本登美惠（宫崎葵 饰）母亲早逝，十年来她与父亲和彦（国村隼 饰）相依为命。登美惠因性格原因在学校没有朋友，还经常受到欺负，她只能躲在自己的世界里，幻想着某一天成为著名的小说家。 一个转学生的到来改变了登美惠的生活。她叫富江（安藤希 饰），神秘、美丽，具有令人无法拒绝的魅力。个性开朗的富江很快和登美惠成为好朋友。在朋友的邀请下，富江来到登美惠的家中做客，然而和彦却为富江的容貌所震惊。因为她竟和自己当年的初恋情人长的一模一样……