72 Times. That's how many times a heart beats per minute. Each beat is precious, valued, and important. No matter how much you might hate, dislike, and loathe your life, every beat is essential. You might not want to live anymore because you feel like no one is there to care for you, to make you feel important, to love you. But you just need to find the reason that makes you want to keep living, even in the most difficult, brutal, and challenging situation. You need to find the light in your life to keep your heart beating and beating, 72 times a minute.

Kang Yoonji (You) have always lived life in a poor condition, no parents nor guardians, no luxurious house, no latest electronics, no family, no friends, no love. Yet she welcomed every day and night with a positive attitude despite the fact that her life is pretty much in ruins and has a dark past that made people treat her cold-heartly, and also the fact that she suffers from a disability. Even though thoughts of suicide came to her countless times, she fought them down one by one. There's a reason why she is still living and fighting hard against the cruel fate         because of someone that lights up her dark world, Youngjae. When someone came along and solved her problems when she needed help the most, she thought her life is finally changing for the better. Until that someone proves her wrong or......right. Could he be an angel that brings peace and happiness, or a fiend who will bring more hell-like life to her?