Kim Taehyung-

A 34 years old bussinessman who is an workaholic.  Never says it but he can't deny that deep down in his heart .... he loves his young wife.

Jung Heeyoung-

A 23 year old girl also an intern in the medical field. Working hard to become a successfull surgeon. Loves her husband with all her heart.

Byun Baekhyun-

A 28 years old  surgeon working in the same hospital as Heeyoung.Secretly likes his junior but keeps it to himself since he knows she is " happily" married.

​​​​​Kang Seulgi-

A 28 year old lady working in the ITsector of Taehyung's company. Secretly loves her boss and might has plans to take her boss-employee relationship with Taehyung to another level even if she knows it's wrong.

Heeyoung knew that every relationship has it's ups and downs and she was ready to go through it if it was meant to make her and her husband's relation stronger . But what she didn't know was that the turn her marriage life would take in order to make them stronger would cost multiple heartbreaks, tears and unknown feelings.