For three years, Nam-cheol and his girlfriend, Joo-hee, have lived together. A rent hike pushes them to search for a new place—only to find worse options. Joo-hee is advised to apply for the newlywed housing program with Nam-cheol. Meanwhile, Nam-cheol's mother—trapped with a conservative husband—urges Nam-cheol to apply for the youth rental housing lottery so she can move into the unit herself, effectively "graduating from her marriage." Nam-cheol must choose just one of the two programs: "graduating from marriage" or marriage. Will they find happiness in the end?