In Ulsan in 1990, a name spread among nightclubs, and that was Jang Soo-won.With his strong recovery ability, he became famous in the tourist nightclub of the State Guesthouse and was known as “Monster”.However, behind this “Monster” lies a story full of brotherhood and difficult life.

Zhang Soo-yuan is a man who is forced to act as a thug because of life. His life is not rich, and sometimes he even needs to make a living by pretending to be hit by a car to blackmail him.In such a difficult situation, he still adhered to his commitment and affection to his brothers, showing his perseverance.

On an ordinary night, Zhang Zhuyuan checked into a motel.There, he noticed a girl delivering coffee - Ji Hee.Her appearance was like a ray of sunshine shining into his dark life.Zhang Soo-won developed a good impression of Ji-hee, and this emotion became a rare warmth in his life.

However, the good times did not last long.Jang Soo-won soon discovered that he was being used by Guangzhen. Disappointed, he met Ji-hee again.The two met, and Jang Soo-won began to tell Ji-hee about his past.They recalled the past together, and Jang Soo-won talked about his experience of being betrayed by Min-ki and nearly being silenced.Fortunately, he escaped from danger, but the scars in his heart were difficult to heal.

Later, Jang Soo-won met Min-ki again.Faced with the former betrayer, he did not choose to escape, but stood up bravely and taught Minji a lesson.This move not only showed his courage, but also proved his determination and strength.

After Deputy Chief Min learned about Zhang Suyuan's ability, he came up with the idea of ​​recruiting him for his own use.And Zhang Zhuyuan also gradually found his own direction in this series of events.

By chance, Zhang Soo-yuan got lost again.He wandered the streets, feeling confused and helpless.Just then, Ji Hee appeared.With concerned eyes, she sent Zhang Suyuan back to the hotel.At that moment, Zhang Suyuan was filled with emotion and tears welled up in his eyes.He understood that Zhixi's appearance not only brought him warmth, but also allowed him to rediscover the meaning of life.