Ryeowook owns a toy store in Russia. He is only 20 and he lives a happy, jolly life. He always treats the kids who come to his store. He loves their cuteness and they love his cuteness too. His toy store is everything. His home, source of  money, and….

his secret lab. He is a spy and scientist. Nobody knows of him, his location, and how he is the creator of green heart. He has hidden the green heart, but soon enough it will come out of his grasp. He has already killed many agents that have come too close to finding it. He will do whatever it takes. 

 

Kyuhyun has been watching Ryeowook. Ryeowook has been watching him back too. They know of each other. Both are spies, scientists, and assassins. No big deal. Kyuhyun is not after the green heart, but also is protecting it. He worked with Ryeowook to create the heart. He took all the glory and left Ryeowook in the dark. But they both knew it was part of a much bigger plan.

 

Henry, a canadian civilian was caught in the midst of all the spy buisness. Now he has to adapt or die. He knows of the green heart and others want to kill him. Good Luck.

 

Zhou Mi is a Chinese assassin sent to get the green heart like all the others. But he doesn't want to. He was trained to be an assassin since a child. Now he wants to settle down and move on. This was going to be one of his last missions. But the hardest too. He is the top assassin in China and his enemy is Sungmin the top assassin in Korea. Now he knows Siwon is after the green heart too. Siwon is #2 followed by Eunhyuk then Donghae. Ever Since he heard of this all he want to do is kill them. He wants to be the top in the world. He wants to be best. He wants to win. He's gone rogue.