To appease his grandfather's wishes, Kang Tae-moo agrees to a blind date. Jin Young-seo enlists Shin Ha-ri's help to scare away her latest prospect.
Tae-moo lies about having a girlfriend to stop the endless barrage of blind dates, with the perfect person in mind to play the part.
Ha-ri has a long list of facts about Tae-moo to memorize — as well as someone important to meet. Young-seo declares her independence.
In and outside of work, Ha-ri scrambles to hide her true identity from Tae-moo and his grandfather. A fake one-year anniversary comes up.
As payback for being fooled, Tae-moo sets a trap for Ha-ri at a company event. But when she drunkenly apologizes, he has a change of heart.
When plans for a confession go awry, Tae-moo takes Ha-ri on a date by the sea disguised as a work trip. Cha Sung-hoon confronts a red-faced Young-seo.
Tae-moo plays the part of Ha-ri's smitten boyfriend in front of her friends, much to the chagrin of a wary Lee Min-woo and a jealous Go Yoo-ra.
Calling their kiss a mistake, Ha-ri continues to reject Tae-moo's advances. But an unreturned text and word of his blind date stir up her emotions.
Jo Yoo-jung falls for Sung-hoon, landing him in hot water with Young-seo. Tae-moo and Ha-ri try to keep their relationship a secret at work.
Kang Da-goo's suspicions about his grandson's love life are proven true. On a rainy night after work, Ha-ri takes Tae-moo out on a date.
When Ha-ri's personal life becomes the talk of the town, Tae-moo's grandfather gives her an ultimatum. Young-seo's dad suggests dinner with Sung-hoon.