Takuya and Rika are singles who work for a travel agency. One day, their manager announces that someone from their location must become a branch manager at the Alaska location opening next year! Worse, she wants to choose someone who is single. How do Takuya and Rika dodge the assignment? By pretending to get engaged! Will they be able to keep everyone convinced that they are in love?

Takuya receives a call from someone who knows their engagement is a hoax. Their colleague Gonda insists on visiting. Gonda brings Keisuke and Komiya to tag along and they drill Takuya and Rika's plan to get married. Also, Kurokawa asks Takuya to accompany Mari Tsuji, a world-famous pianist known for being loose with men, on her Tokyo tour. Concerned, Rika drops by Takuya's place unannounced...

Rika's mother Ritsu and Takuya's father, Koichi, somehow learn about his son's fake wedding plans. The young man's father takes a flight to Tokyo to visit his son's workplace. The pretend couple, who haven't told their parents about the engagement, is in a frenzy! Their only choice: Visit Kumamoto together and tell Takuya's family the truth.

Rika and Takuya announce that they don't plan on getting married. After seeing how close Nao and Takuya are, Rika keeps an emotional distance from him. Ritsu arranges to set Rika up with Osawa, who pays Rika a surprise visit at work! As Takuya and Rika's relationship grows awkward, Shinshi, who was believed to be happily married, goes missing. His disappearance stirs panic at the tour company.

Nao moves to Tokyo, and Rika spills her frustrations about Takuya's wavering feelings to the newcomer. Nao then calls Takuya to Rika's apartment. It's time to confront the man! Meanwhile, Gonda hits it off with Kaori, a girl he met on a dating app.

Takuya confessed his love to Rika, but she doesn't understand what he sees in her. To find out, she takes him on a date! Gonda tells Kaori that he wants a serious relationship with marriage in mind... but Kaori has a secret.