Park Sangcheol is just an ordinary facility management employee working in a high-end apartment complex. While his job requires him to fix leaky pipes and broken amenities, his true obsession lies elsewhere: the beautiful married women who inhabit the complex. For Sangcheol, every service call is an opportunity to get closer to the objects of his desire, observing their lives and secrets from the shadows.

What begins as harmless voyeurism quickly escalates into something far more dangerous. Sangcheol starts targeting specific residents, crossing boundaries fueled by forbidden curiosity and lust. He believes he can play a quiet, undetectable game of psychological manipulation and seduction, using his position to gain access and exploit vulnerabilities.

This thrilling and intense adult drama chronicles Sangcheol’s descent into a life consumed by desire. He finds himself caught in a web of clandestine affairs and explosive secrets, where the stakes are constantly rising. Will his dangerous fixation lead to ultimate satisfaction, or will his "wife game" shatter the lives of everyone involved, including his own?