On her wedding day, Kang Dan-i hides out in Cha Eun-ho’s car. After her divorce, she secretly cleans Eun-ho’s place while trying to restart her career.
Eun-ho is dismayed to see Dan-i among the job applicants, but she resolves to rediscover what she wants to do with her life and move on from the past.
Eun-ho demands to know what’s going on with Dan-i, who runs into Ji Seo-jun while looking for a room to rent and later receives a kind gesture.
Eun-ho can’t recall what he did the previous night. Dan-i stumbles across Seo-jun’s dog and agrees to have ramen with the new neighborhood friend.
Undaunted by the unscrupulous director's bullying, Dan-i devises an idea for a new book. Dan-i and Eun-ho relish a day out with her first paycheck.
Eun-ho is perturbed to find Dan-i having a late meal with Seo-jun. Dan-i savors a coup at work that proves fleeting, and is thrust back to square one.
Peeved to hear Dan-i accepting Seo-jun's sudden offer to go out, Eun-ho texts her while she's at a bookstore on her date, but her evening hit a snag.
When Seo-jun makes Dan-i a curious proposal, Eun-ho protests and tells her it's not what she thinks. Eun-ho and Dan-i reminisce together in the snow.
Eun-ho's reply thrust Dan-i into a daze, as it contradicts her memory of recent events, and she muses how a dog-eared book can suddenly seem new.
Dan-i's confusion becomes worry when Eun-ho doesn't answer her texts or come home. When he doesn't appear at the office, she's at a loss for what to do.
Dan-i tries to downplay the episode with Eun-ho, but he sees their situation differently. When the book concert hits a snag, her past comes in handy.
Dan-i revels in her latest feat at work and celebrates with Eun-ho, but he's given a tough order to execute after questions about her résumé emerge.
Eun-ho faces hurdles while making job inquiries for Dan-i and realizes how impossible it is for women trying to return to the workplace after a hiatus.
An unexpected source reaches out to help Dan-i land a new job after she tenders her resignation. Dan-i learns that Eun-ho’s been hiding something.
Eun-ho wants Dan-i to say he did the right thing, and tries to figure out who’s behind a mysterious manuscript. But he isn't the only one investigating.
Eun-ho gets a call from Gapyeong and is urged to live his life so that he may be like a book in someone’s life. Dan-i focuses on a cherished tome.