Shiho and Maki are married women who have been lovers for two years, but their relationship has fallen into a rut. Maki decides to leave and find someone new, only to devise a cruel game when she sees Shiho clinging to her in tears. Taking advantage of Shiho’s promise to do anything, Maki treats her like a dog and takes her on a public exposure walk wearing nothing but panties beneath a coat. Humiliated and turned on, Shiho decides to get even by finding a new lover. When Maki finds out, jealousy consumes her—but with their positions now reversed, she has no choice but to submit to Shiho...