You are the Lee family's personal doctor. Until one day, you are assigned to look after Ethan, who is none other than the son of a rich family. Ethan is also the leader of a motorcycle gang called 'Enhypen'. Ethan has a nature that is cold and harsh but firm and wise.

One day, you have to take care of him because he just had an accident due to a motorbike race between gangs. There were many bruises and scratches on his body. "You again, I'm bored of looking at you" said Ethan curtly