Sep 15, 2018 · 1h 10m
When Kang Su-il is sentenced to prison, Kim Dong-cheol offers to raise his infant daughter as his own. Nearly three decades later, Su-il walks free.


A woman's life gets twisted one day because of her biological father who shows up after 28 years of absence. He had been thoroughly hiding his identity, afraid that he might be an obstacle in his daughter's life. The father and daughter meet the "only ones" in their lives and put back together the pieces of their broken hearts.
Browse every episode and jump into details.
Sep 15, 2018 · 1h 10m
When Kang Su-il is sentenced to prison, Kim Dong-cheol offers to raise his infant daughter as his own. Nearly three decades later, Su-il walks free.
Sep 15, 2018 · 1h 10m
Sep 16, 2018 · 1h 10m
For her sister, Kim Do-ran offers to give up her life savings to So Yang-ja. Dong-cheol bumps into someone he must avoid at all costs.
Sep 16, 2018 · 1h 10m
Sep 22, 2018 · 1h 10m
When photos from his missing USB drive are leaked online, Wang Dae-ryuk suspects Do-ran. Su-il starts working for the Wang household.
Sep 22, 2018 · 1h 10m
Sep 23, 2018 · 1h 10m
At a job interview, Do-ran has another unpleasant run-in with Dae-ryuk. Oh Eun-yeong opposes her son's marriage to Na Hong-sil's daughter.
Sep 23, 2018 · 1h 10m
Sep 29, 2018 · 1h 10m
On her way to the final round of her job interview, Do-ran gets held up on the street by an older woman who seems to think she's someone else.
Sep 29, 2018 · 1h 10m
Sep 30, 2018 · 1h 10m
Meeting Do-ran as the Wang family's chauffeur, Su-il embraces the opportunity to speak to her. Dae-ryuk keeps up what he sees as a harmless joke.
Sep 30, 2018 · 1h 10m
Oct 6, 2018 · 1h 10m
Jang Da-ya digs up information on her father's murder case. Su-il resolves to stay. Dae-ryuk tries to apologize to Do-ran.
Oct 6, 2018 · 1h 10m
Oct 7, 2018 · 1h 10m
Dae-ryuk and Do-ran do their best playing games at the company retreat. After Da-ya and Wang I-ryuk's wedding, Park Geum-byeong goes missing.
Oct 7, 2018 · 1h 10m
Oct 13, 2018 · 1h 10m
When Do-ran's threatened over her mother's debt, Su-il pledges to take care of it himself. Worried about Do-ran, Dae-ryuk goes to her house.
Oct 13, 2018 · 1h 10m
Oct 14, 2018 · 1h 10m
Upset about her mother and sister, Do-ran opens up to Su-il. Later, she heads back to the Wang residence to calm down Park Geum-byeong.
Oct 14, 2018 · 1h 10m
Oct 20, 2018 · 1h 10m
Do-ran considers an unusual request from Eun-yeong. In an attempt to quash his feelings for Do-ran, Dae-ryuk tries dating another woman.
Oct 20, 2018 · 1h 10m
Oct 21, 2018 · 1h 10m
Do-ran, Su-il and Dae-ryuk wind up going to an amusement park with Geum-byeong. Yang-ja gets the wrong impression of Su-il.
Oct 21, 2018 · 1h 10m
Oct 27, 2018 · 1h 10m
Su-il's refusal to help him win over Do-ran disappoints Dae-ryuk. Inside the Wang residence, Do-ran runs into trouble with Da-ya.
Oct 27, 2018 · 1h 10m
Oct 28, 2018 · 1h 10m
Following the competition, Do-ran is placed on Dae-ryuk's team. Da-ya is ordered to apologize. Na Hong-ju meets Su-il at church.
Oct 28, 2018 · 1h 10m
Nov 3, 2018 · 1h 10m
Now that Geum-byeong has a caretaker, Da-ya wants Do-ran to stop coming around. Do-ran and Dae-ryuk officially go on a date.
Nov 3, 2018 · 1h 10m
Nov 4, 2018 · 1h 10m
Concerned about his mother, Wang Jin-kuk requests Do-ran be brought back. Kim Mi-ran suffers a blow to her ego at a get-together with friends.
Nov 4, 2018 · 1h 10m
Nov 10, 2018 · 1h 10m
Hong-ju's heart is stolen when Su-il chases down a pickpocket for her. Su-il decides to support Dae-ryuk in his pursuit of Do-ran.
Nov 10, 2018 · 1h 10m
Nov 11, 2018 · 1h 10m
Hong-sil panics when she realizes Su-il is the man her sister has fallen for. Da-ya's jealousy grows when she sees Do-ran's new necklace.
Nov 11, 2018 · 1h 10m
Nov 17, 2018 · 1h 10m
Da-ya finds out about Do-ran and Dae-ryuk's relationship. Meanwhile, Dae-ryuk tells Do-ran he wants to take things to the next level.
Nov 17, 2018 · 1h 10m
Nov 18, 2018 · 1h 10m
Eun-yeong wants Do-ran to end everything and get as far away as possible from her son. Hurt, Do-ran comes to a heartbreaking decision.
Nov 18, 2018 · 1h 10m
Nov 24, 2018 · 1h 10m
Dae-ryuk learns the real reason behind Do-ran's actions. Eun-yeong and Da-ya attempt to give Geum-byeong a convincing stand-in for Do-ran.
Nov 24, 2018 · 1h 10m
Nov 25, 2018 · 1h 10m
Dae-ryuk faces off against his mother, who is adamant that he cannot marry Do-ran. Meanwhile, Jin-kuk says he approves of their union.
Nov 25, 2018 · 1h 10m
Dec 1, 2018 · 1h 10m
Do-ran's background as an orphan becomes an obstacle for her marriage. Geum-byeong sets out to make sure Do-ran and Dae-ryuk can remain together.
Dec 1, 2018 · 1h 10m
Dec 2, 2018 · 1h 10m
At the wedding, Su-il is spotted by someone who knows his true identity. Da-ya discovers an interesting document in Geum-byeong's room.
Dec 2, 2018 · 1h 10m
Dec 8, 2018 · 1h 10m
A household staff finds Do-ran's photo inside Su-il's room. Mi-ran heads to a blind date, all the while moping over Jang Go-rae.
Dec 8, 2018 · 1h 10m
Dec 9, 2018 · 1h 10m
Do-ran is stunned to hear her biological father was present at her wedding — doubly so when Geum-ok points him out in a photo.
Dec 9, 2018 · 1h 10m
Dec 15, 2018 · 1h 10m
Learning Do-ran knows his identity, Su-il packs up to disappear. Eun-yeong is determined to make Do-ran's married life tough.
Dec 15, 2018 · 1h 10m
Dec 16, 2018 · 1h 10m
Geum-byeong and Su-il lend a hand when Do-ran's handed a ton of housework. Geum-byeong wanders to Do-ran's old house again.
Dec 16, 2018 · 1h 10m
Dec 22, 2018 · 1h 10m
Yang-ja shows up at the Wang residence to ask for money, vexing Eun-yeong. Mi-ran decides she wants to be with Go-rae.
Dec 22, 2018 · 1h 10m
Dec 23, 2018 · 1h 10m
Go-rae brings Mi-ran home to his mother and aunt, introducing her as his intended. Needing funds for the marriage, Yang-ja goes to Dae-ryuk.
Dec 23, 2018 · 1h 10m
Dec 30, 2018 · 1h 10m
When Go-rae refuses to give up his engagement, Da-ya tries to talk him out of it. Geum-byeong's jewelry goes missing, and Do-ran becomes a suspect.
Dec 30, 2018 · 1h 10m
Jan 5, 2019 · 1h 10m
Da-ya reports to Eun-yeong that she saw Do-ran visiting Su-il's room late at night, and grows increasingly resentful as her claims are dismissed.
Jan 5, 2019 · 1h 10m
Jan 6, 2019 · 1h 10m
The Wang family doesn't understand why Su-il wants to quit all of a sudden. Da-ya gets her hands on shocking DNA test results.
Jan 6, 2019 · 1h 10m
Jan 12, 2019 · 1h 10m
Insisting Su-il return to his job, Geum-byeong says she'll go on a hunger strike. Dae-ryuk follows Do-ran as she goes somewhere one night.
Jan 12, 2019 · 1h 10m
Jan 13, 2019 · 1h 10m
The unveiled secret about Do-ran and Su-il astounds Eun-yeong, who kicks Do-ran out of the house. Out on the street, Do-ran collapses.
Jan 13, 2019 · 1h 10m
Jan 19, 2019 · 1h 10m
Eun-yeong is thrown off guard when an attorney shows up with divorce papers. Hearing this, Do-ran rushes back to the house.
Jan 19, 2019 · 1h 10m
Jan 20, 2019 · 1h 10m
When a former fellow inmate of Su-il's reappears in his life, Do-ran wonders how they know each other. Hong-sil gives Mi-ran the cold shoulder.
Jan 20, 2019 · 1h 10m
Jan 26, 2019 · 1h 10m
After witnessing Su-il and Hong-ju together, Da-ya throws a fit in front of Do-ran. Yang-ja has a bone to pick with Hong-sil.
Jan 26, 2019 · 1h 10m
Jan 27, 2019 · 1h 10m
Reading letters written to her father, Do-ran learns what he's been hiding from her all along — as well as the crimes of his past.
Jan 27, 2019 · 1h 10m
Feb 2, 2019 · 1h 10m
Requesting divorce from Dae-ryuk, Do-ran takes her belongings out of the house. Yang-ja thinks she's the reason behind their separation.
Feb 2, 2019 · 1h 10m
Feb 3, 2019 · 1h 10m
Despite the truth about Do-ran's father, Dae-ryuk wants to stay together. Knowing that his past has hurt his daughter agonizes Su-il.
Feb 3, 2019 · 1h 10m
Feb 9, 2019 · 1h 10m
Finding out that Su-il was once incarcerated throws Hong-ju into a state of shock. Go-rae reveals to Mi-ran that his father was murdered.
Feb 9, 2019 · 1h 10m
Feb 10, 2019 · 1h 10m
When a horrified Hong-sil and Da-ya show up, Hong-ju tells them she wants to spend the rest of her life with Su-il.
Feb 10, 2019 · 1h 10m
Feb 16, 2019 · 1h 10m
Having uncovered the awful connection between Su-il and her father's death, Da-ya interrupts her aunt's wedding. Hong-sil is inconsolable.
Feb 16, 2019 · 1h 10m
Feb 17, 2019 · 1h 10m
Da-ya announces to the neighborhood that Su-il's bakery is run by a murderer. Jang So-yeong comes across Dae-ryuk at a bar.
Feb 17, 2019 · 1h 10m
Feb 23, 2019 · 1h 10m
Su-il asks around about a man who may be able to fill in a gap in his memories. Hong-sil comes by the bakery and causes a scene.
Feb 23, 2019 · 1h 10m
Feb 24, 2019 · 1h 10m
As Geum-byeong's condition worsens, a desperate Jin-kuk turns to Do-ran. Go-rae speaks to Su-il about his father's death.
Feb 24, 2019 · 1h 10m
Mar 2, 2019 · 1h 10m
While Dae-ryuk sets his sights on reuniting with Do-ran, Eun-yeong has other ideas. Go-rae deals with difficult news.
Mar 2, 2019 · 1h 10m
Mar 3, 2019 · 1h 10m
Hong-sil declines Su-il's offer to save her son's life, but with Go-rae's health deteriorating fast, Mi-ran urges her to reconsider.
Mar 3, 2019 · 1h 10m
Mar 9, 2019 · 1h 10m
With Su-il stuck in a coma, Dae-ryuk sticks by Do-ran's side against his mother's wishes. A mysterious man has something he needs to say to Su-il.
Mar 9, 2019 · 1h 10m
Mar 10, 2019 · 1h 10m
Hoping for answers, Do-ran and Dae-ryuk track down the mysterious man. While in Su-il's hospital room, Eun-yeong gives Do-ran a harsh warning.
Mar 10, 2019 · 1h 10m
Mar 16, 2019 · 1h 10m
Apologies are made. Su-il opposes Do-ran's return to the Wang family, afraid she will be treated with disrespect.
Mar 16, 2019 · 1h 10m
Mar 17, 2019 · 1h 10m
Dae-ryuk faces competition for Do-ran's affections. Da-ya gets unexpected help as she confronts her husband. Eun-yeong regrets her actions.
Mar 17, 2019 · 1h 10m
Quick answers about this season's release timeline and episode lineup.
My Only One Season 1 premiered on September 15, 2018.
My Only One Season 1 has 106 episodes.
The season opens with Season 1 Episode 1, "Episode 1". It aired on September 15, 2018.
Go to Season 1 Episode 1