Gong Min-young is hired by a secret dating agency, called Cyrano. Their newest assignment is to try to fix up a veterinarian and his crush, a librarian who likes mysterious men.

As the mission progresses further, Min-young starts to have doubts about whether they're doing the right thing.

The agency's newest client is a pop star, at Ah-rang's high school, who has feelings for the class president.

A problem with Ho-yeol's crush, Se-kyung, is that she like Ah-rang.

Ah-rang must decide whether to take Se-kyung for himself or give her to Ho-yeol. Byung-hoon's first love, Yoon Yi-seol, returns.

The agency's new client is a chef who has fallen in love with his rival.

The agency tries to restore Mi-jin's faith in men. Byung-hoon and Seung-pyo both find themselves starting to have feelings for Min-young.

The agency plans to have Dal-in expose Mi-jin's ex-boyfriend's true colors. Byung-hoon is becoming jealous of Min-young and Seung-pyo.

A young girl, with a fear of men, comes to the agency asking them to build up her self-confidence so that she can talk to her crush. While Byung-hoon is suffering from superstitious paranoia, Min-young decides to take charge of the mission.

Moo-jin's grandmother, Madam Hwang, asks the agency to help one of her nurses get a date with her crush, a fireman. Seung-pyo confesses his love for Min-young.

Byung-hoon tries to help Chul-soo overcome his guilt so he can fall in love with Hae-shim. Seung-pyo wants to hire the agency to help Min-young fall in love with him.

The agency find out that Hae-shim has cancer. Byung-hoon starts to doubt that the ending of the relationship will be happy. Min-young realizes that she has feelings for Byung-hoon.

Min-young moves into the Cyrano theater to be closer to Byung-hoon. Byung-hoon decides to accept Seung-pyo's offer to help Min-young fall in love with him.

A mysterious man blackmails the agency into setting him up with Hye-ri. Seung-pyo forces Byung-hoon to vacate the theater.

The group rescues Min-young. Now they are planning to shut down the agency for good.