Jung-ah (Kong HyoJin) and Hyun-soo (Kim DongWook) have lost the passion of their marriage and are left with a dull, monotonous daily life. What troubles them most these days is the overly lively noise coming from their upstairs neighbors, Mr. Kim (Ha JungWoo) and Soo-kyung (Lee HaNee), every night. Jung-ah prepares a dinner party out of courtesy for the couple upstairs, who tolerated the noise from the renovation work, and that evening, the couple upstairs, sitting across the table from Jung-ah and Hyun-soo, make a proposal that neither of them could have anticipated...