Somebody explain me the whole story why those boys were adbucted?

Why were they abducted? Because that guy is a pedophile, that's why. On top of that, he's got other serious pscyh issues way beyond what most of us can even comprehend. He terrorized the first kid into being too afraid to even seek help when he could have and no doubt was doing the same to the second. By the way, they were not together the day they were abducted. They were found together. One was abducted four years ago, the other several days ago.