I think this could be even better if it related to the original book as well, because it roughly ends like the following. There's a space-bat-angel-dragon the size of Australia that has landed in Australia, utterly terrorizing the world. The Iron Man (original British name for the Iron Giant) challenged s-b-a-d to a game of wits, which he won.

“You’ve won, yes, you’ve won, and I am your slave,” cried the space-bat-angel-dragon. “I’ll do anything “Very well,” said the Iron Man. “From now on you are the slave of the earth. What can you do?”

“Alas,” said the space-bat-angel-dragon, “I am useless. Utterly useless. All we do in space is fly, or make music.”

“Make music?” asked the Iron Man. “How? What sort of music?”

“Haven’t you heard of the music of the spheres?” asked the dragon. “It’s the music that space makes to itself. All the spirits inside all the stars are singing. I’m a star spirit. I sing too. The music of the spheres is what makes space so peaceful.”

“Then whatever made you want to eat up the earth?” asked the Iron Man. “If you’re all so peaceful up there, how did you get such greedy and cruel ideas?” The dragon was silent for a long time after this question. And at last he said: “It just came over me. I don’t know why. It just came over me, listening to the battling shouts and the war-cries of the earth – I got excited, I wanted to join in.”

“Well, you can sing for us instead,” said the Iron Man. “It’s a long time since anybody here on earth heard the music of the spheres. It might do us all good.” And so it was fixed. The space-bat-angel-dragon was to send his star back into the constellation of Orion, and he was to live inside the moon. And every night he was to fly around the earth, through the heavens, singing.

Then world peace arrives. I think it's even more bizarre that something like RPO could happen...