Harry is playing outside when he finds a skipping rope. He shows it to his Nana who it seems is quite good with skipping ropes. He also shows it to his sister Sam, who tells him that it now belongs to him, thanks to the rule ""finders keepers."" Harry and his dinosaurs aren't sure about this, but they decide to go play with it anyway in Dino World. As they play, Sid loses his glasses. When he finds that they've been claimed by angry troll, he, Harry and the dinosaurs start to feel rather differently about the idea of ""finders keepers.""