Well, it's actually a crucial point, because as Keith's bascially falling to his death, Nature asks him to become One. It's the whole connection between Keith's kind and Nature. It's what makes them what they are. So at this point, he has no choice because he's about to die...dum dum dum. So how does Nature help him??? Hmmmm. Good point. Okay, you're One now. Bye! What?! LOL. Yea, big moment for Keith. I think Corrigan finds it in his heart to become a hero too.