What are they going to do? Dragons have invaded Crumbling Castle and the knights are on holiday.
Ralph, a small boy decides its time to step in. He dons a suit of armour and with Fortnight the Friday knight and Fossfiddle the wizard, Ralph sets out to defeat the fire-breathing fellows.
Dragons at Crumbling Castle by Terry Pratchett, £12.99, www.randomhouse.co.uk