The biggest conflict arises when Park Jin-seok and Kim Hye-won find out that their spouses have an affair. When Kim Hye-won finally meets Choi Soo-ah, she is furious and slaps Choi Soo-ah’s face. She even arranges a meeting for Seo Do-woo and Park Jin-seok. Afterward, she tells Seo Do-woo that she doesn’t want him to be in the same situation with Choi Soo-ah and tells him that she would let him go. Meanwhile, Park Jin-seok begins to suspect that his wife is having an affair. To avoid his suspicion and keep Choi Soo-ah by his side, he applies for a job abroad. He suddenly sends his mother to live with his sister in New Zealand and forcefully takes their daughter from Jeju Island to Seoul with him.
Caught up in the disputes between her parents, Park Hyo-eun starts thinking about where she wants to live. She begins to consider her options: New Zealand, where her grandmother and aunt are, Jeju Island, where her mother prefers, or Seoul. She asks her mother to respect her choice whatever it is. Finally, she chooses to live in New Zealand because that’s where her heart directs her to. She understands that Jeju Island is where her mother wants to be the most and she’s okay to live separated from her mother because their hearts will always be close. She knows that her mother loves her and she believes that she can be strong wherever she is.
After sending Park Hyo-eun to New Zealand, finally, Choi Soo-ah has a chance to talk with Park Jin-seok. She asks him to part ways. She is about to tell him everything about Seo Do-woo, but he refuses and asks her to keep the words to herself. He says that what they are experiencing are hardships that need to be overcome. She firmly answers that it is not a question of hardships, but their relationship has already broken apart.
Park Jin-seok then comes to the bar and meets Seo Do-woo. He gets mad and starts insulting him. At the time, he sees Choi Soo-ah and leaves the bar. Park Jin-seok then comes to Song Mi-jin’s house to calm down. It is revealed that the claustrophobia he had 20 years ago is recurring because he is scared of being abandoned by the most precious person to him. He asks Song Mi-jin not to tell Choi Soo-ah about his symptoms. Because he saw Seo Do-woo and Choi Soo-ah before, he admits his suspicion and says that he won’t see Choi Soo-ah ever again.
Choi Soo-ah parts ways with Park Jin-seok on good terms. However, she is feeling guilty for sending her daughter away and making her ex-husband’s claustrophobia symptoms recur. She is uncertain if it’s really okay to go that far just to be happy and she is wondering if she would be able to go to Seo Do-woo. Seo Do-woo then lets Choi Soo-ah decide for her own happiness and tells her that he will wait for her because she is the one he wants to be with forever.
In the epilogue, it is shown that Kim Hye-won quits her studies and settles in Malaysia with Mary, Song Mi-jin is close to Kevin Oh (Park Jin-seok’s junior) and still feeds Choi Jae-ah (Choi Soo-ah’s younger brother), Choi Soo-ah is maintaining her close relationship with Park Hyo-eun with video calls and has become a trainer in her previous airline company, Seo Do-woo is working as an architect, Park Jin-seok has recovered and has returned to being a pilot, and Park Hyo-eun enjoys her life in New Zealand.
Choi Soo-ah and Seo Do-woo are still in touch via messages. After reading a letter from Park Hyo-eun that said that she will work hard and smile just like her mother, Choi Soo-ah decides to be happy and accept Seo Do-woo’s invitation to go traveling. They then meet at the airport and smile when they see each other.