Computer animation. In Tronjiworld, the Tronji Boggle Train is derailed by fallen boptangerines, so the Tronjilugs cannot exercise and the Tronjiboggles are bored. In Peopleworld, the new pavement cement is proving a sticky situation for the furniture movers in South Africa. Can the children restore happiness to both worlds? And will the Tronjibooters put on a stomping show for the Tronjitrumps?