After losing his wife 10 years ago, Dae-bok, who lives a single life in the twilight of his life, is seriously considering remarrying Mi-sook, But the happiness is short-lived. Without any warning, his daughter Dae-hee comes into Dae-bok's house, bringing her newborn grandson Geon-woo and son-in-law Chang-mu. Dae-hee's family has taken over Dae-bok's house with no intention of leaving. Dae-bok's house becomes a crucible of chaos as his youngest son, Dae-seong, who lost his house deposit through stock investments, also comes crawling in, and his friends who play a theatre with him are dragged home one by one. In this way, Dae-bok's sweet single life falls apart overnight. To make matters worse, Dae-bok's patience explodes when Mi-sook announces a breakup to him... Will Dae-bok be able to regain his sweet single life?