Hi, welcome.

Jungkook is a famous Mafia's son and was known as the weakest guy among the mafia's clan. He often makes his father became furiously upset with him and feel ashamed to have a son like him.

Because of that, he was sent to Canada to meet with a guy who is skilled in Mafia's work and learn all the things he should've known to be a perfect son to his father. But things didn't go as what his father wanted it to be.