Road Sweeper Keven has lots to do keeping Biggleton neat and tidy while Archie the Gardener is on holiday. When all the leaves fall off the trees, Keven and Rowan the Chef try to find ways to stick them back on. Evie the Artist tries to help too, but nothing seems to work. When Keven borrows Amelia the Scientist's latest invention, the leaves go everywhere. Keven and his friends need to clear up the mess before Archie returns from his holiday.