Beautiful office worker Kano plans to marry a colleague and leave the company, enraging department head Fujikawa, who has wanted her for years. Exploiting her fiancé's mistake, he makes her his subordinate and corners her alone. She resists his forced kisses, but his invasive tongue gradually melts her resolve. Their thick exchange of saliva escalates into oral service at the office and finally creampie sex with relentless tongue kissing in the couple's own home, leaving her body and heart surrendered to pleasure.