A clear sky. A peaceful mountain village. A Japanese-style house stands there. A veranda. An open window. Akagi Sayo, clad in an apron, is wiping down the veranda. A captivating cleaning performance. Her son, Akagi Masayoshi, is weeding the garden. This is because Akagi's younger sister, Kanda Maki, is planning to visit from Tokyo today with her son, Daisuke. The laughter of a happy parent and child echoes through the countryside. Enjoy the unexpected, fast-paced drama and incestuous swapping.