Son Hae-yeong, a woman who is calculating by nature and hates to suffer losses. Kim Ji-uk, a civilian officer, neighborhood angel, perfect convenience store part-timer who hates causing trouble to people. After breaking up with her boyfriend to avoid losses, Hae-yeong makes a surprising offer to Ji-uk to win the in-house contest. What offer could she have made?

Strange behavior follows after the proposal. Ji-uk rejects Hae-yeong's offer to be her fake husband without hesitation. Woo-jae shamelessly gaslights Hae-yeong after stealing her idea. Provoked by Woo-jae, Hae-yeong becomes increasingly desperate for a fake marriage and starts searching for a husband on a secondhand app. Will she find a fake husband?

This marriage is a failure! Shocked by Ji-uk's true looks, Hae-yeong vents her frustrations and becomes suspicious of him for knowing so much about her. Rumors about her handsome husband spark her coworkers' curiosity about her proposal story. Hae-yeong asks Ji-uk to propose to her, only to be treated like a weirdo again. Hae-yeong's wedding plan to erase all memories of her husband begins!

What are the odds of staying at the same hotel as your ex on your wedding day? Thanks to Woo-jae and Yi-lin, Hae-yeong and Ji-uk spend the night together. She teases him about his inexperience, and he mentions their kiss. They spend the night discussing gains and losses. Hae-yeong goes on the honeymoon alone while Ji-uk disappears without a word. Hae-yeong spots Ji-uk at an unexpected place!

The husband who had been missing and out of contact shows. And as a new recruit, no less. Hae-yeong is shocked to see Ji-uk as a new recruit at Kkulbee. Though he is apologetic, he is unable to share why he had to join the company. Meanwhile, fearing that their fake marriage will be exposed, Hae-yeong devises a plan to get rid of Ji-uk. However, this unexpectedly puts her in a tough spot.

Due to Ji-uk's unpredicted disclosure of his identity, he and Hae-yeong become the talk of the company. Hae-yeong is mistaken for pulling strings to get Ji-uk employed, while Ji-uk is upset that Hae-yeong speculates him to be the one who reported her for workplace harassment. Meanwhile, the mastermind behind Ji-uk's employment slowly becomes known. Will the true nepo baby's identity be revealed?

Waking up in the same bed as your ex-boyfriend and husband? Hae-yeong and Ji-uk wake up with no memory of the previous night after getting drunk. Woo-jae is upset at Yi-lin over a sudden personnel transfer, while Hae-yeong regrets getting married, prompting Ji-uk to offer a divorce. Meanwhile, Ja-yeon, worried about Gyu-hyun, visits the orphanage and almost runs into Ha-jun.

Hae-yeong and Ji-uk's long-awaited first kiss leads to a fight. What's the meaning behind Hae-yeong's kiss and Ji-uk's kiss? Ji-uk thinks of different ways to reconcile with the angry Hae-yeong. Who will emerge victorious in their first marital fight? Meanwhile, Hae-yeong visits the orphanage with the new business idea proposed by Ji-uk and faces the risk of Woo-jae discovering her secret.

Hae-yeong and Ji-uk reconcile. Ji-uk's place turns into chaos when Gyu-hyun visits him upon learning of his secret. Ji-uk decides to quit, only to be informed of an unexpected personnel change before he can hand in his resignation letter. However, Gyu-hyun's payback doesn't end there. Hae-yeong is bound to face losses in the fight between Gyu-hyun and his father. Will she fight back or back down?