As the Harekaze takes a well-earned break, the Blue Mermaids interview the instructor who attacked the Harekaze, Kaoru Furushou, who can't remember what drove her to do so, while Akeno talks with Rin, who is worried about her cowardly personality. Meanwhile, a group of instructor ships from Toumai Marine boys high school go to investigate the Musashi, only to suddenly come under attack from it. Back at the Harekaze, as the girls hold a welcoming party for Wilhelmina, they are requested to investigate the situation with the Musashi. Despite Mashiro's warning, Akeno goes off on her own to rescue Moeka, but crashes her skipper just as she gets near.