In Our Blues Episode 18, Dong-seok discovers his estranged mother Ok-dong has terminal cancer and initially refuses to see her. Pushed by Pureung neighbors and grounded by a late-night phone call with Sun-ah, he finally agrees to drive Ok-dong to Mokpo, confronting a lifetime of bitter childhood trauma face-to-face.
| Item | Details |
|---|---|
| Drama | Our Blues |
| Episode | Episode 18 |
| Original Network | tvN |
| Original Air Date | June 5, 2022 |
| Key Characters | Lee Dong-seok, Kang Ok-dong, Min Sun-ah, Jung Eun-hee |
A Grim Diagnosis and the Instinct to Flee
Dong-seok spends his days sourcing wholesale goods in Seoul, keeping his distance from Jeju and the mother he resents. But back in Pureung, Ok-dong is quietly fading away, struggling through her morning routines while clutching an old flip phone to arrange a memorial trip to Mokpo. When Dong-seok refuses her calls, Eun-hee steps in to deliver the blunt reality: his mother has terminal cancer and does not have much time left.

Lying on his bed in a Seoul motel, Dong-seok shuts down immediately. He tells Eun-hee that he has no mother, claiming he will handle any regrets on his own terms after she passes away.

Seeking a brief escape from the news, Dong-seok goes to see Sun-ah off work in Seoul. Instead of finding comfort, he spots her laughing across the street with her young son and ex-husband heading out for dinner together. Feeling completely out of place, he silently turns his truck around and heads back to Jeju, where his phone lights up with furious messages from Pureung villagers demanding he show up for his mother.
The Pureung Confrontation and Unhealed Trauma
As soon as Dong-seok lands back on the island, the Pureung inner circle corners him around a diner table. In-gwon, Ho-shik, Eun-hee, and Jung-joon try pushing him to swallow his pride and escort his illiterate mother to Mokpo. In-gwon loses his temper over Dong-seok's stubbornness, but Dong-seok meets every accusation with icy silence.

Things spill over when Eun-hee tries softening the blow by saying she understands his anger, recalling how furious she felt when Ok-dong moved into another household right after Dong-seok's sister drowned. That well-meaning phrase backfires completely. Dong-seok loathes hearing anyone claim they understand his pain.

He lays bare the humiliation of growing up in the house of his father's friend, watching his mother live as a concubine while he endured relentless abuse from his stepbrothers. The trauma ran so deep that he spent his entire adult life avoiding marriage out of terror that he might end up with someone like his mother. For a closer look at the practical market jackets and Seoul tailoring worn across these scenes, check out our Our Blues Episode 18 Outfits: Seoul Tailoring and Jeju Workwear Breakdown.
Sun-ah's Perspective and the Road to Mokpo
Storming out into the night, Dong-seok drives down the dark coastal highway, torn between blinding fury and heavy numbness. When Sun-ah calls him later that evening, he finally opens up about the memories that broke him as a boy.

After his father and sister died, his mother forbade him from addressing her as his mom, forcing him to call her aunt and striking him repeatedly whenever he resisted. When he begged her to escape that abusive household with him, she turned on him and called him a thief. Sun-ah listens quietly and offers the one piece of advice that breaks through his defensive wall: do not look for easy forgiveness, but go ask her why she acted that way while she is still here to answer.

The next day at the market eatery, Dong-seok sits over a bowl of soup and casually tells Ok-dong he will drive her to Mokpo. That night, Ok-dong sits alone practicing her Korean alphabet strokes in a notebook. At four in the morning, Dong-seok pulls his truck up to her house, grumbles while helping pack her vegetable bundles, picks up Choon-hee, and heads for the passenger ferry. The long-delayed reckoning between mother and son has officially begun, setting the stage for their eventual closure in Our Blues Episode 20 Recap: Ok-dong's Final Journey and Dong-seok's Healing and the functional outdoor layers broken down in Our Blues Episode 20 Outfits: Winter Tailoring, Knits, and Practical Mountain Layers.
Frequently asked questions
Why was Dong-seok so hostile toward his dying mother in Episode 18?
Decades of trauma broke their bond. After losing his father and sister at sea, his mother moved in with his late father's friend as a concubine. She forced young Dong-seok to call her aunt rather than mother and beat him when he refused, leaving lifelong emotional scars.
How did Sun-ah convince Dong-seok to accompany Ok-dong to Mokpo?
Instead of forcing artificial forgiveness, Sun-ah urged Dong-seok to confront Ok-dong directly and demand answers while she is still alive. That perspective helped him stop running away and face his mother directly.
What caused Dong-seok's outburst at the Pureung diner?
Eun-hee claimed she understood his pain, which triggered Dong-seok's explosive response. He hates outsiders pretending to grasp his childhood misery, pointing out that none of them lived through his household humiliation.
Why was Ok-dong determined to travel to Mokpo?
She intended to attend the ancestral memorial rites for her late husband's household in Mokpo, using what little time she had left to carry out her final obligations alongside her son.