Yoon Taemin is a guy who works part-time jobs to pay of the debts that his abusive father has left him, one day on his way home he is in a car accident where he steps in front of a truck. He wakes up in the body of a guy named Han Siwon. Han Siwon is a rich guy who has parents and a twin brother.
He gets bullied at school but now that Taemin has his body he fights back and eventually earns the name "mad dog" around school. In school there's a guy Min Siwon, whom Taemin knows from his childhood as Min Woojin.
Min Woojin is the only know who knows that Han Siwon is actually Yoon Taemin.
It ends well, sadly there's no sex scene between Yoon Taemin and Min Woojin :/
At the End of the Road