The narrative starts on the day preceding the graduation ceremony. Five middle school girls are each absorbed in their actual daily lives. Following a sudden event, these girls are transported to a fantasy realm where they encounter one another. In this setting, they become aware of the looming crisis threatening the world. To prevent this disaster, the five must cooperate and merge their five hearts into one through dance. Nevertheless, the girls fail to develop affection for the world and cannot express their genuine feelings to each other, preventing their hearts from uniting. The deadline is rapidly nearing. Will the dance of the five girls manage to save the world? And will they succeed in graduating?