“I need someone to marry.”

Jinhyuk, the son of the chairman of Myungsung University and Eunsu’s first love, returns to Korea amid widespread rumours that he is searching for a marriage partner. Unexpectedly, he appears before Eunsu and proposes marriage.

“If you’re not seeing anyone right now, I’d like you to marry me.”

Eunsu, who has been living a quiet and secluded life due to rumours surrounding her ex-fiancé’s accident, is taken aback by Jinhyuk’s sudden proposal.

“So, how long would the marriage last…?”
“Why would there need to be a time limit?”

Believing it to be a purely practical, show-window marriage, she agrees. However, her relationship with Jinhyuk begins to take an unexpected turn.

“I intend to share a real relationship with my wife and have children. Other people live that way, don’t they?”

Where will this marriage, which began as a simple “agreement,” ultimately lead?