I've been living a smooth sailing life with my wife, Maki. Three years ago, my best friend Mukai helped me out without a word when my business was going downhill, and that's how I've been able to live the life I have now. But now Mukai has lost his wife, and it seems he can't do anything. He left all the housework to his wife, so the trash and laundry are piling up. Wanting to repay my best friend for his kindness, I decided to lend my wife, Maki, who can take care of him, for three days. But my kindness was cruelly betrayed...