Sian and Donggook visit the public bathhouse together. They spend an unforgettable day together at the bathhouse as they scrub each other’s backs, play jokes, and have fun together. Meanwhile, William visits the hair salon with Sam for the first time ever to cut his long hair. Afterwards, they spend time together in Itaewon. Taeyoung and Rohui go on a trip together on a special train. Rohui explores the unique train that even has a foot spa and makes sweet memories with her dad. Guest stars: Lim Seul-ong, Mihal Ashminov (Source: Wikipedia)