The Superman families head to Jeju-do for a much needed holiday. They go to the aquarium and enjoy the local delicious raw fish delicacy. Meanwhile Sarang is visited by members of Girls' Generation who are fans of her. They have a blast becoming friends with Sarang. Afterwards Sarang and her dad Sunghoon heads to Jeju-do to join the rest of the Superman families. They end the day by planning a birthday party for the twins. Guest stars: Girls' Generation (Taeyeon, Sunny, Tiffany, Sooyoung, Yoona)