Luna goes to a music show and rehearses, Tae In decides to take a nap in the car, and due to his somnambulism, Yoon Joo accompanies him. Yoon Joo goes to the restroom for a moment but ends up spending more time while helping Chae Ji Yeon zip up her dress. Tae In falls asleep meanwhile and sleepwalks to the forest while it starts raining cats and dogs and the concert gets canceled. (Source: XieLalisa at MyDramaList)