After finally getting a decent break from work, a young man named Yoshio follows his wife's suggestion and visits her distant family home. There, he is warmly welcomed by his beautiful and alluring stepmother, Miki, who treats him with kindness and gentle care. As she smiles and says, "It's so good to see you, Yoshio," and "Please relax and take your time," Yoshio, starved for intimacy after such a long separation from his wife, finds himself unable to suppress his growing desire. Gradually, Miki's voluptuous figure and soft, inviting body awaken Yoshio's deepest urges...