archytele The Vault
Season guide

My Only One: Season 1

106 episodes Premiered Sep 15, 2018 Updated Jul 25, 2026

My Only One season 1 revolves around a woman whose life is significantly impacted when her biological father appears after a 28-year absence. This event sets off a chain of events that alter her life. The story explores the complexities of family relationships and the consequences of past actions. The father's past is revealed to be heavy, indicating that he has a significant burden to carry. The series delves into t

Season overview

My Only One season 1 revolves around a woman whose life is significantly impacted when her biological father appears after a 28-year absence. This event sets off a chain of events that alter her life. The story explores the complexities of family relationships and the consequences of past actions. The father's past is revealed to be heavy, indicating that he has a significant burden to carry. The series delves into the emotional and psychological effects of his reappearance on the woman and those around her.

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Episodes

S1·E1

Episode 1

Sep 15, 2018 · 70 min

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.

S1·E3

Episode 3

Sep 16, 2018 · 70 min

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.

S1·E5

Episode 5

Sep 22, 2018 · 70 min

When photos from his missing USB drive are leaked online, Wang Dae-ryuk suspects Do-ran. Su-il starts working for the Wang household.

S1·E7

Episode 7

Sep 23, 2018 · 70 min

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.

S1·E9

Episode 9

Sep 29, 2018 · 70 min

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.

S1·E11

Episode 11

Sep 30, 2018 · 70 min

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.

S1·E13

Episode 13

Oct 6, 2018 · 70 min

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.

S1·E15

Episode 15

Oct 7, 2018 · 70 min

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.

S1·E17

Episode 17

Oct 13, 2018 · 70 min

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.

S1·E19

Episode 19

Oct 14, 2018 · 70 min

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.

S1·E21

Episode 21

Oct 20, 2018 · 70 min

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.

S1·E23

Episode 23

Oct 21, 2018 · 70 min

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.

S1·E25

Episode 25

Oct 27, 2018 · 70 min

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.

S1·E27

Episode 27

Oct 28, 2018 · 70 min

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.

S1·E29

Episode 29

Nov 3, 2018 · 70 min

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.

S1·E31

Episode 31

Nov 4, 2018 · 70 min

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.

S1·E33

Episode 33

Nov 10, 2018 · 70 min

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.

S1·E35

Episode 35

Nov 11, 2018 · 70 min

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.

S1·E37

Episode 37

Nov 17, 2018 · 70 min

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.

S1·E39

Episode 39

Nov 18, 2018 · 70 min

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.

S1·E41

Episode 41

Nov 24, 2018 · 70 min

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.

S1·E43

Episode 43

Nov 25, 2018 · 70 min

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.

S1·E45

Episode 45

Dec 1, 2018 · 70 min

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.

S1·E47

Episode 47

Dec 2, 2018 · 70 min

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.

S1·E49

Episode 49

Dec 8, 2018 · 70 min

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.

S1·E51

Episode 51

Dec 9, 2018 · 70 min

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.

S1·E53

Episode 53

Dec 15, 2018 · 70 min

Learning Do-ran knows his identity, Su-il packs up to disappear. Eun-yeong is determined to make Do-ran's married life tough.

S1·E55

Episode 55

Dec 16, 2018 · 70 min

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.

S1·E57

Episode 57

Dec 22, 2018 · 70 min

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.

S1·E59

Episode 59

Dec 23, 2018 · 70 min

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.

S1·E61

Episode 61

Dec 30, 2018 · 70 min

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.

S1·E63

Episode 63

Jan 5, 2019 · 70 min

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.

S1·E65

Episode 65

Jan 6, 2019 · 70 min

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.

S1·E67

Episode 67

Jan 12, 2019 · 70 min

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.

S1·E69

Episode 69

Jan 13, 2019 · 70 min

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.

S1·E71

Episode 71

Jan 19, 2019 · 70 min

Eun-yeong is thrown off guard when an attorney shows up with divorce papers. Hearing this, Do-ran rushes back to the house.

S1·E73

Episode 73

Jan 20, 2019 · 70 min

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.

S1·E75

Episode 75

Jan 26, 2019 · 70 min

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.

S1·E77

Episode 77

Jan 27, 2019 · 70 min

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.

S1·E79

Episode 79

Feb 2, 2019 · 70 min

Requesting divorce from Dae-ryuk, Do-ran takes her belongings out of the house. Yang-ja thinks she's the reason behind their separation.

S1·E81

Episode 81

Feb 3, 2019 · 70 min

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.

S1·E83

Episode 83

Feb 9, 2019 · 70 min

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.

S1·E85

Episode 85

Feb 10, 2019 · 70 min

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.

S1·E87

Episode 87

Feb 16, 2019 · 70 min

Having uncovered the awful connection between Su-il and her father's death, Da-ya interrupts her aunt's wedding. Hong-sil is inconsolable.

S1·E89

Episode 89

Feb 17, 2019 · 70 min

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.

S1·E91

Episode 91

Feb 23, 2019 · 70 min

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.

S1·E93

Episode 93

Feb 24, 2019 · 70 min

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.

S1·E95

Episode 95

Mar 2, 2019 · 70 min

While Dae-ryuk sets his sights on reuniting with Do-ran, Eun-yeong has other ideas. Go-rae deals with difficult news.

S1·E97

Episode 97

Mar 3, 2019 · 70 min

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.

S1·E99

Episode 99

Mar 9, 2019 · 70 min

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.

S1·E101

Episode 101

Mar 10, 2019 · 70 min

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.

S1·E103

Episode 103

Mar 16, 2019 · 70 min

Apologies are made. Su-il opposes Do-ran's return to the Wang family, afraid she will be treated with disrespect.

S1·E105

Episode 105

Mar 17, 2019 · 70 min

Dae-ryuk faces competition for Do-ran's affections. Da-ya gets unexpected help as she confronts her husband. Eun-yeong regrets her actions.