From Lezhin: Thinking that she is on the last train home all alone, Nayeon feels the urge to have fun by fantasizing about her desires. However, reflections in the train windows reveal that there is a mysterious man on the same train. He approaches her and hands her his business card. At the thought of seeing this handsome stranger again, she accepts his proposal and comes to a place called Peach Puff. What kind of place is it? What are these people doing?