Based on a web novel by author Sung So Jak, Marry My Husband tells the revenge story of terminally ill Kang Ji Won, who witnesses her best friend Jung Soo Min and her husband Park Min Hwan having an affair and gets killed by Park Min Hwan. Kang Ji Won travels back 10 years into the past and seeks revenge with Yoo Ji Hyuk, the head of a department who works at the same company as her.