Baku's new mission is to defeat his nemesis, Nox. Wandering through a black hole in his dreams, Baku begins to chase the nightmares he had as a child.
As a young boy, Baku attends cram school. His teacher, Nox, appears, as if pursuing his actions! Shocked by his past encounter with Nox, Baku confronts Nox in an attempt to recover his erased memories!