After betrayal leaves Meri broke and homeless, she asks stranger Kim Wooju - who shares her ex's name - to pose as her husband for a luxury townhouse.

Wooju refuses Meri but later agrees to be her husband. When Meri learns of the condition to get her prize, she seeks Wooju to reprise the role.

After losing her home, Meri moves into a motel. Wooju's help backfires and their fake marriage faces new risks when neighbour Sanghyeon grows wary.