S2·E2 The Seal of Mu

After discussing the incident with Sonia, Geo meets a professor named Vega. She explains that Cepheus's activity on Earth recently awakened the EM wave residents (UMAs) of the lost continent Mu. Mu was sealed with an extremely powerful EM wave being within it, and the UMAs wish to break the seal in order to release the being. But to do so, they require three OOParts—one of which is the Sword of Zerker stuck in Omega-Xis's stomach—and Vega hopes to cooperate with Geo in order to retrieve the OOParts first. Suddenly however, a mysterious new enemy named Rogue attacks the university and assaults Geo...