Sayaka, the eldest of three sisters, is in a sexless marriage with her obstetrician husband. Tomoe, the second daughter, is a serious graduate student who believes she will one day meet her soulmate. Yui, the youngest daughter, is a free-spirited part-timer with a free-spirited approach to relationships. One day, Yui gets a boyfriend who is an elite salaryman and gushes about him at home. Meanwhile, Tomoe meets her idolized actor and experiences a dramatic first time. And Sayaka also has a relationship with a construction worker who saved her from a burglar. However…