Chae-ah had a great time with her friends of 20 years from her hometown Ulsan! "Single Girl" Chae-ah vs. "Married Girl" friends. They envy of each other's completely different lives. Actress Chae-ah goes back to being a 17-year-old girl in front of her friends. A day full of noisy Ulsan beauties! Gukju found the 1+1 event for the amusement park, free pass! She calls the rainbow members, but Youngchul is the only one who responds... Was the first rainbow couple born?! Two people who dream of dating at an amusement park. What happened to the two?! Hwang Chi Yeul's mother visited her youngest son's rooftop room in Gumi! As soon as she saw the mess in the house, she nagged at him. From furniture shopping to home-cooked meals with mother's taste, Chi Yeul's nice day will be revealed!