Subaru and Misora discuss recent events when they meet the UMA Brachio. Brachio has been trying to protect the lake from intruders and pollution, and he had attacked Rockman in error. However, Gori commands a group of workers to begin filling in the lake, enraging Brachio Wave and causing him to attack them. Rockman and Harp Note intervene, giving Gori the opportunity to submerge to the lake's bottom and steal the oopart hidden below.