His name is Heo Hyunjun, his mom is one of the most influential mafia boss in the country, making him grows up a little spoiled

All of sudden, one of her mom mafia colleague's goddaughter want to transfer school, which to the school he is currently enrolled into

In school, Hyunjun is weak academically, while the person his mom want to introduce is a smart cookie, and her mom arranged the person to become his tutor and 'playmate' because she is the same age as him