Jenny Dolittle informs Kane and Misa that she has detected three spaceships without transponders following them, one of them actually being the Bentenmaru. During night duty, Marika and Chiaki conclude one of the three spaceships is trying to jam the transponder signal of the Odette II to cut off communication to the Sand of the Red Star. In order to detect this spaceship, Marika activates the high frequency radar and locates the mystery ship, revealed to be the battleship Alcyon. However, when Marika reactivates the high frequency radar, the ship mysteriously vanishes, furthermore learning that the Alcyon has been lost one hundred twenty years ago. Being informed about this so-called ghost ship, Kane makes an encrypted call to the Bentenmaru to investigate the matter, while Marika and Chiaki tries listen to his conversation from the bridge. Jenny, catching them redheaded, is already aware about Marika potentially being the captain of the Bentenmaru and possibly being targeted by the ghost ship. Marika believes that the Odette II should fight back, which the whole club agrees upon. The Odette II would be able to detect the ghost ship by maintaining its course around the Sand of the Red Star. The crew discover that the ghost ship is using a drone ship to disguise its transponder signal to avoid radar detection.