Simon is a young orphan boy in the bustling metropolis of Ravenbury whose life is turned upside down when he becomes an apprentice Tinker. Simon must learn the ins and outs of being a Tinker, while also thwarting a scheme to kill the Queen of the Westland Empire. With his band of friends and his trusty slingshot, Simon will prove to be the bravest boy Ravenbury has ever seen.