Acting Director Futaba seeks ways to improve the camaraderie and teamwork between the Shinkalion team, and is shocked when Commander Izumi suggests bringing the entire Institute on a hot springs trip. Commander Izumi goes off in search of hidden hot springs, and the shadowy figures strike with a GIANT ENEMY CRAB and Tsuranuki is injured in the initial exchange. But when the Giant Monstrous Being strikes again, will Hayato and Akita be able to take him on with a man down and only Miss Futaba and Honjo on the comms?