Sumika and Ikuma dream of one day holding their own wedding at a romantic chapel, but Ikuma’s screwup during their midsummer trip to Karuizawa results in Sumika standing at the altar without him, playing another man’s bride! Can this pair of lovebirds overcome the greatest crisis they have faced since getting married?! Buying a home, having kids…the happy couple has started thinking about their future, and things are about to get chaotic!