Forgotten love

Jongdae lived his normal life until he suddenly lost all of his memories.
He is soon found by two guys, who went through same memory loss experience.
He starts his new life among 10 young boys who all lost their memories at certain age. Suho, leader of this group explains Jongdae that he is one of survives who got sick with deadly desease when he was a baby. The cure for this desease, which was created by Shim Changmin, had side effects, which caused that kids got extraordinary abilities.
After Jongdae starts to train, he slowly gets to know that his new world isn't safe at all. Every time he goes out he is in danger, because of other group of guys with powers lead by Taeyang. One of the members from Jongdea's group is missing and he can't get along with Xiumin with who Jongdae actually shares quite interesting past.