The little sisters are infected with the Bad End Syndrome, which causes them to have nightmares. In order to cure it, Neptune and Vert travel to Plutia's dimension to obtain the Shimmering Flowers. At their destination, Neptune is reunited with Plutia and Peashy, and meets the other dimension's Noire, Vert and Blanc. With the aid of the alternate CPUs, Neptune and Vert ascend a 10000-floor tower w...