Yeong-ju is a girl with cute looks, an innocent smile, and a brilliant talker. She is also in prison for fraud. She easily convinces the evaluation board to grant her parole in time to attend her older sister's wedding. As soon as she's released, she boards a train for Busan with the Wedding ducks she'd handcrafted as her wedding gift. On the train, she sits across village pharmacist Hee-cheol, who is on his way to propose to his girlfriend with his deceased mother's family heirloom ring. Yeong-ju witnesses a pickpocket stealing the ring from Hee-cheol, and afraid of becoming the suspect and violating her parole, she steals the ring back for Hee-cheol. But in the process, she is unable to board the train on time, missing it and leaving her wedding gift bag on the train.