Sang-hyeon runs a laundromat and volunteers at the church where his friend Dong-soo works. Dong-soo helps Sang-hyeon steal babies from the church's baby box and sell them on the adoption black market. But when a young mother, So-young, returns after abandoning her baby, she discovers them and joins them on a road trip to interview the kid's potential infertile parents. Soo-jin and Detective Lee are pursuing them.