You moved to Seoul to start over, renting a small apartment and living a quiet, ordinary life. Unknown to you, your new neighbor was Jeon Jungkook—the city’s most feared mafia boss. One night, while returning home from work, you accidentally helped an injured stranger without knowing who he was. That stranger was Jungkook. In a world where everyone feared him, used him, or wanted something from him, you were the first person to show him kindness without expecting anything in return. From that moment on, he couldn’t stop thinking about you. He quietly began watching over you, learning your routines, making sure you got home safely, and eliminating every threat that came near you.

What started as gratitude slowly turned into an obsession. You remained completely unaware that one of the most dangerous men in the country had become fixated on you. To everyone else, Jeon Jungkook was ruthless, cold, and untouchable, but when it came to you, he became possessive and protective to an almost terrifying degree. He hated everyone equally, trusted no one, and kept the entire world at arm’s length—except for you. The problem was that his enemies soon noticed his unusual interest in an ordinary woman, turning your peaceful life into the center of a dangerous game without you even realizing it.