The merchant ship Epsion suddenly encountered. When Daba learns that Daba's sister-in-law, Olivie, is on board, Daba heads for Epsion, but Epsion is a Poseidal spy ship, and Daba, Am, and Kao are captured. Still, Daba, who reunites with her sister-in-law, talks to Olibby, but Olibby doesn't remember her hometown or Daba ...