The world is divided into humans and werewolves, but there is another species, the ultrahumans, they have powers that make other people be scared of them.     The Do's are the rulers of the humans, they are known for not having any children, but what happens when the Kim's, the rulers of the werewolves make a visit to the Do's house and Prince Jongin find out that they have a kid, Kyungsoo, but why do they keep him hidden from the world?

   Lay is the right hand of the king and since he was small he was in charge with protecting the prince, he swore to protect the prince with his life, since then Suho and Lay has been best friends, but is that it, only friends?

           Kyungsoo was a happy, energic and friendly person, who smiled everyday and when was hurt, he always told everything to his friends and cried to relieve himself, but at the end of eigth grade, he changed completly, he pushed everyone away, he never smiled again, he never cried again, he became a reserved person, even if his friends try to help, is no use, he's not opening anymore, that is before another kid came in, will he be able to help? Or will h

      Kyungsoo is a cyborg, the scientists from M.A.M.A. Androids found a way to replace baterry energy with heart's energy, he's the first of his kind, more known as D.O., a cyborg that looks exactly like a human and no one knew about their existance.       On a day, they brought him outside to examine his reactions with people, never would they know that a single cop/secret agent named Kim Jongin would blow all their plans up just by bumping into Kyungsoo.       Will Kyun