In the Korean Movie 18+ The Girl Next Door 2, Sejin couple, the husband seems to have lost interest in his wife Ahae. Ahae’s husband is just a heartless person. In fact, Sejin is having an affair with Ara, Ara’s beautiful younger sister.
A young man named Gunhoo, after a period of career crisis, receives a message from the alumni association, and decides to attend after some hesitation. There, he meets Ahae, the neighbor who has had a crush on her since she was young, and is still stunning with her beautiful appearance. Aha is lonely because of her husband’s innocence and Gunhoo approaches her for advice. As if they are aware of each other’s loneliness, they are attracted to each other and spend a night, returning to each other’s daily lives, but after forgetting Ahae, Ahae’s hand appears in their minds all night. Will they be able to return to their daily lives?