Gnasher finds a Gnashersaurus rex thigh bone while digging in Beanotown Park! A long lost relative! It's not long before Walter and Dr Pfoofleffer hatch a plan to create a whole new living dinosaur from the bone! Dennis and his pals must save Gnasher's ancestor and hide him in a place where no one will notice a fully-grown dinosaur...

Pieface's all time hero, Cherry Bakewell, is coming to Beanotown to judge the annual bake-off. Pieface wants to make the best pie ever and win the competition but when Dennis discovers Pieface has never actually baked a pie before, he does everything he can to ensure a win, with pie-splattering results!