Whilst continuing their protection of the Star Fleet transport cruisers on their mission to Pluto, Shiro tells his fellow crew of X-Bomber that he believes Captain Carter is still alive. Lamia receives a strange message from the space galleon Skull - an unknown voice calling her. She takes off in one of X-Bomber's shuttles to find the Skull. Shiro, Lee and Hercules are sent after her in Dai-X. As Lamia approaches the Skull ship, her shuttle loses power. The Skull is attacked by the Imperial Alliance warship and Lamia calls Shiro to attack the battlecruiser to save the Skull. Shiro first saves Lamia, and, rejoined by Doctor Benn in X-Bomber, they defeat the alien attack and the Skull escapes.
—Anonymous