Anti P.T.

Lee Param is living the elite life—he has a lucrative job, charming personality, and dashing looks that make everything sail smoothly. However, hiding beneath the surface are a few minor hiccups: Param is gay, he likes his boss Han Taehyun, and his sensitive body becomes erect at the slightest physical touch.

Whenever such an accident occurs, Param can only hide and pleasure himself until it is dealt with. To battle these surprises, Param decides to join the company's gym to release all his pent-up energy. But the last person he expects to be his private instructor is Seo Hwi—the smug and attractive new trainer who caught Param masturbating in the men's room.

Hwi's teasing is taken to the next level when he and Param start engaging in more than just exercise—but Param's mind is still set on Han. As his feelings for the two handsome men start becoming foggy, Param must remain true to himself and choose which one makes him truly fulfilled.