You are all here for a reason; one or another. The government has chosen You for a reason. You may not know why, but you will soon find out. Somewhere in your DNA is a single strand of it that the government has placed in you years before, a failed genetic experiment from your ancestors, but now the descendants of the select few are needed more than ever. They are The Chosen.
Of course they cannot just tell the group of teens and children this, instead they decided to collect them all up and place them in an abandoned city in the middle of a person-less island and bombarded it with nuclear reactors to activate the Strand in their DNA. Now special abilities are arising and the government is watching their experiment closely to see what they will discover and be able to do.