She lives her minimalist life in her small apartment. Unlike her neighbor, who seems to enjoy life to the fullest. He lives in the penthouse across and parties as if there's no tomorrow. Every day he shows up with a new woman and whispers sweet words in her ear. Sometimes, he even meets with a woman multiple times.

But one thing is clear, everyone who gets too close to him plunges into the deep night.

The tricky part is that she feels drawn to him, so she makes a bet with him.