Qingyu and Jiachen were nemesis for each other back in high school, but after years, they unexpectedly met again because of “sex”.

Confident and spirited Jiachen is a sex therapist certified in both nursing and counseling. As a sports enthusiast, she is brave enough to explore the world of sex, but she is still frustrated in finding love despite her expert sex skills. Jiachen and her old flame Wang Jihua are a good match both on the outside and the inside, but their sex life has always prevented them from a stable relationship. One day, Wang even disappears into thin air without any warning.

On the other hand, the introvert librarian Qingyu seems to own a happy family and a dream job, but she just can’t make love to her husband, Zhe. She wants to talk to someone, but her colleagues at work are facing dire relationship trouble themselves.

As the story unfolds, Qingyu becomes Jiachen’s patient. As Jiachen tries to solve Qingyu’s problems, other cases also come into the picture, including a wet market gangster suffering from premature ejaculation, a minor teenage boy, SM online streamer, an older lesbian couple, etc. Among them, there’s also the mysterious Mr. Z who calls regularly to seek advice from Jiachen via phone.

As Qingyu gradually learns to face herself and deal with the past with Zhe, their relationship reaches a critical point. For Jiachen, the heart-breaker Wang Jihua also walks into her life again… Can the sex expert Jiachen learn how to love?

In this story, two women with different personalities will try to find love and salvation in their respective therapies of “sex”.