The new academic year begins. Thirteen GEN6 students are brought to the mysterious Home School in a deep forest with no way to escape.

Home School's lessons become more and more cruel. GEN6 students become enemies in order to survive. Meanwhile, Maki gets closer to finding the truth about Run.

GEN6 students plan to run away from Home School and go back to their families, but Maki chooses to stay and search for her brother.