On a weekend in a Tokyo apartment, hardworking salaryman Shintaro frantically tidies up in preparation for his mother-in-law, who is soon arriving from his wife's hometown. His wife's mother, living in the countryside, plans to take a long train journey to the city to check on her daughter and son-in-law. When the doorbell rings, Shintaro quickly jumps to his feet, eagerly awaiting her arrival. As he finally opens the door, he catches his breath and his heartbeat quickens—her figure is breathtakingly beautiful, like a dream, stirring deep emotions within him. Amid this ordinary routine, an extraordinary atmosphere begins to unfold tonight.