Broker

Sang-hyeon and Dong-soo operate an illegal scheme that steals babies from the church's baby box to sell on the adoption black market. They use Sang-hyeon's hand laundry business and their access to the church community to cover their activities. This marks the start of a dangerous chain that entangles Woo-sung's fate.

So-young leaves her newborn Woo-sung in front of the baby box, effectively abandoning him. The act triggers police attention and connects Woo-sung to the brokers under investigation. Woo-sung is placed into the baby box, setting the stage for later custody battles.

Soo-jin and her partner Lee pursue the brokers who traffic babies, linking Woo-sung to the case. The investigation tightens as the brokers realize they are being watched. Soo-jin even contemplates using So-young's murder charge to trap them.

So-young returns to the situation, and Dong-soo reveals a plan to travel and interview Woo-sung's potential parents. Sang-hyeon agrees to join, hoping to protect Woo-sung's future. They prepare for a road trip to meet possible adoptive families.

The first couple willing to buy Woo-sung is unsettled when So-young lashes out, casting doubt on the meeting. The brokers watch closely, ready to pivot to a different lead. The tension underscores how precarious Woo-sung's future remains.

The brokers stop by the nursery where Dong-soo was raised and reveal that he was abandoned too. Hae-jin, a child from that nursery, is drawn into the brokers' circle. The revelations deepen the net of abandonment surrounding Woo-sung.

Soo-jin and Lee set up a sting to capture the brokers, but the brokers sense the trap and adapt. Soo-jin worries about how to use So-young's murder charge without revealing too much. The investigation tightens the pressure on everyone involved.

The dead man's widow calls So-young to demand the baby's return and hires Tae-ho to recover Woo-sung. This adds pressure and shows the brokers’ reach. So-young is pushed toward a dangerous decision.

The brokers finally secure a good adoptive couple, the Yoons, but with a strict condition: Woo-sung must never meet So-young again. The arrangement effectively separates Woo-sung from his original caretaker. It foreshadows the looming conflicts over Woo-sung's future.

On a ferris wheel, Dong-soo proposes that they all raise Woo-sung as a found family. The moment exposes the complicated loyalties among the group. The ride serves as a symbolic crest for their intertwined fates.

So-young learns she is likely to be arrested for murder, changing her ability to raise Woo-sung. In a cafe, Sang-hyeon meets his estranged daughter, who confirms that her mother wanted no contact. Soo-jin eavesdrops, signaling shifting alliances.

Soo-jin persuades So-young to surrender in exchange for a lighter sentence and access to Woo-sung, while Sang-hyeon and Dong-soo decide to go along for Woo-sung's sake. Dong-soo is arrested and So-young surrenders; the news reports Tae-ho’s death and a large cash find, leaving the case with an ambiguous outcome. The film moves toward a grim, unresolved justice.

Three years pass and Soo-jin has adopted Woo-sung, while the Yoons cannot complete their adoption due to illegal activity. Soo-jin arranges for the found family to visit Woo-sung, keeping other parties at a distance. Hae-jin's fate leads him to an orphanage bus as he tries to reach the park.

In the park, So-young runs toward Woo-sung when an unseen passenger in a hand laundry van rolls down its window, revealing a shared photo. The van carries a symbol that echoes So-young's memory, hinting at a lasting connection. The ending leaves Woo-sung's future open as the van drives away.