Despite heavy opposition from family, Jeong-yeol and Na-ra succeed in getting married through the sheer power of love. But fast forward two years, and the two are leaving a courthouse after receiving a 30-day divorce settlement period, when a car accident causes them to lose both their memories. The amnesia-stricken couple quickly fall for each other again, and their family members devise an elaborate 30-day plan to recall their memories and complete the divorce.