Jiachen and Qingyu, who had disliked each other since high school, unexpectedly reunited when they grew up.

The beautiful and unrestrained Jiachen is a sex therapist with dual certifications in nursing and psychology.Jiachen loves sports and is brave enough to explore sex. However, despite being familiar with sex skills, she is still frustrated in love.Jiachen and her old love Wang Jihua matched up in appearance and personality, but due to sexual issues, Wang Jihua disappeared without warning one day.

Qing Yu, a forest-style librarian, has an ideal family and job that others envy, but she cannot have sex with her husband Azhe.Qing Yu wants to find someone to talk to, but her good colleagues in the library are unable to protect themselves, and their emotional relationships are in jeopardy.

Qingyu became Jiachen's case by fate. In the process of Jiachen assisting Qingyu in solving sexual problems, there were cases such as premature ejaculation market gangsters, minors, SM live broadcast hosts, elderly lesbians... etc. who came to Jiachen for assistance., including the mysterious man Z who has a landline consultation.

When Qingyu gradually had the courage to face herself and uncovered the scars of the past with Azhe, the relationship between the two also reached a critical point.And Wang Jihua, who had made Jiachen sad, entered Jiachen's life again.How should Jiachen, who understands sex, learn to love?

Two women with very different personalities each found the salvation of love through exploratory treatments.