Cole is on this island since he attacked a classmate of his (Peter) out of anger. The judge just chose to send Cole away to an island away from the main land. They don't even know the reason Cole attacked Peter, they don't listen and is just mean to this boy with Abusive parents and anger issues

He's sitting in a tree that's a bit away from the cabin he has to stay in. He's young and shouldn't be by himself on an island. He's crying badly since he's scared