Broker

Sang-hyeon is the owner of a hand laundry and volunteers at the nearby church where his friend Dong-soo works. On a rainy night, they stole a baby from the church's baby box.

To their surprise, the baby's mother, So-young, comes back the next day only to find that the baby has gone missing.

Not wanting So-young to report to the authority, Sang-hyeon and Dong-soo are left with no choice but to confide in So-young that they are doing this out of goodwill.

So-young then decides to go with them on a road trip to interview her baby's potential parents. Meanwhile, two detectives, Soo-jin and Lee, are on their trail.

These strangers who are connected through the baby box are bound to embark on an unexpected journey together.