Germa, a nation known for its magical research, appears to be gearing up for war. It has sent a group of its most feared researchers, Ich, to neighboring country Liana. It's up to Zizou Olympia, the titular Dark Witch, to investigate Germa's suspicious actions. Meanwhile, Sola, not having heard back from her parents in a while since leaving to study abroad, heads back to Liana to investigate their disappearance, crossing paths with Ich's researchers along the way.