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.
|Title||My Only One|
|Original Title||하나뿐인 내편|
|First Air Date||September 15th, 2018|
|Last Air Date||September 16th, 2018|
|Number of Seasons||1 Seasons|
|Number of Episodes||4 Episodes|