A little girl is taken over by Medusa's snake. She starts to act strange, and eventually leaves her house, much to her mother's despair. Meanwhile, Stein is determined to teach his students about duel arts, where they will be able to figure out how to resonate as a team. He starts their first lesson by telling Maka, Ox and their weapons, and also Black Star, unarmed, to go against him with all they have, but they end up failing and hurting each other. Medusa, in her new child form, gets to Arachne's castle, but she is not well received. She leaves the castle with a disguised Eruka, swearing to take something she left over at Death City.