After the war for the spirit crystals, Mouse Boy, Himari, Rin, and the others are on their journey to find all of them, but Kurumi and the other enemies in the Shadow Kingdom are here for them as well. Will Mouse Boy and the others get their hands on the spirit crystals first or will they'll be doomed by their enemies?

After the war where Mouse Boy and Himari finally defeated Illidan to save the humanity, Kurumi's free as a good person to start over her life as a new one, but since she has a crush on Mouse Boy, she wants to go on a date with him before something bad can happen to her from the Shadow Legion (Part 2 of Spirit Crystal Chaos)