Shiho and Maki, who are married women but genuine lesbians, have been dating for two years and are reaching a plateau in their relationship. Maki decides to break up with Shiho to find a new lover, but when she sees Shiho crying, she comes up with a wicked plan. She treats Shiho, who says she'll do anything, like a dog and goes on an exposed walk wearing only underwear and a coat. Shiho, soaked with humiliation, decides to find a new lover to get back at Maki... Maki is jealous when she finds out, but now that their positions have been reversed, she has no choice but to submit to Shiho...