A couple’s marriage, already strained by the so-called "seven-year itch," is pushed to the breaking point when the wife's brother and the husband's sister come to stay under the same roof. The siblings, polar opposites in personality, clash constantly and vent their frustrations to their respective siblings—unwittingly fueling misunderstandings and escalating conflicts between the couple. As tension builds through a series of friction and crossed wires, the marriage unravels, ultimately leading the couple to the brink of divorce.
