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?

Hae-yeong is shocked by Gyu-hyun's sudden appearance and Ja-yeon's confession. Gyu-hyun reveals Ji-uk and Ja-yeon's secrets, making Hae-yeong furious and driving them out of the house. Now homeless and uncertain, Ji-uk receives advice from Mr. Jang to live on his own terms. Ji-uk, the angel who has always lived for others, and Hae-yeong, who has discovered his secret. What will be their fate?

Hae-yeong storms out of the house after finding out about Ji-uk's secret, and Ji-uk is unable to hold her back. Ja-yeon feels heavy-hearted, thinking that Hae-yeong is angry because of her. Gyu-hyun and Ji-uk are equally shocked upon learning Hae-yeong and Ja-yeon's secret. Ji-uk struggles to find Hae-yeong, whose whereabouts are unknown, while Hae-yeong is clouded. Will he find her?

Hae-yeong is heartbroken over Eun-ok's sudden death. As she bids farewell with the help of her foster siblings, she begins to understand Eun-ok's life. Meanwhile, she feels heavy-hearted as Ji-uk promises not to leave her. Hae-yeong wishes for Ji-uk to live freely, while Ji-uk struggles to understand her. What will become of their complicated relationship?