Ami Takashima, 35 years old, came all the way from Yamaguchi Prefecture. She met her husband as a college classmate, and they've now been married for 13 years, raising two children together in a happy household. However, after the birth of her second child, her libido began to surge dramatically. Meanwhile, her husband, being older and busy with work, has gradually lost interest in their sex life. Today, under the pretense of attending a former classmate's wedding, she has come alone to Tokyo.