Forty-five band members find themselves inexplicably trapped on the top floor of a mysterious tower. Still reeling from the sudden turn of events, they are confronted by a mysterious Game Master who dictates a single condition for their escape: "Split into your respective bands, overcome the trials, and make your way down to the first floor." The five members of Poppin'Party begin their desperate descent, but a relentless series of cruel traps eliminates them one by one. Soon, only Kasumi and Arisa remain. Just steps away from the exit, Arisa rushes forward in a panic, causing the floor beneath her to collapse. Right as she is about to fall, Kasumi makes the ultimate sacrifice to pull Arisa to safety, vanishing into the dark abyss below with a final, lingering smile...
