Season 4

While digging a ditch at Farmer Pickles' field, Bob and Scoop come across some old bones. Bob goes to show a bone to Mr. Ellis at the museum. Scoop is left on guard at the ditch. Spud persuades him to leave and see the bigger bones he's found. Then Spud decides to put on his own dinosaur display. Mr Ellis thinks they have found a stegosaurus skeleton but is very disappointed that some of the bones are missing. Bob goes back to the field and Scoop remembers what Spud told him.

Bob drops off some tires for Farmer Pickles. When Scoop starts sneezing, Bob thinks he has hayfever so sends him back to the yard. When Spud arrives, causing trouble, Bob asks him to go and look after Scoop. Spud tries to find out what makes Scoop sneeze.

Bob finds a hibernating Porcupine in Farmer Pickles' cottage so he sends Scoop to take it back to the yard. Roley decides to look after it. When Farmer Pickles arrives to see Wendy, Scruffty jumps out of Travis' trailer and he and Pilchard chase each other. Roley worries that it might wake the Porcupine.

Bob and Wendy are working on a shed and a painting job for Farmer Pickles. Dizzy has to guard the wet cement while Bob gets the shed to put up. Meanwhile, things go wrong when Wendy lets Spud help to paint the farmhouse.

Wendy and the machines are building a crazy golf course. Bob prepares a windmill for one of the holes. Wendy finds out that she has the instructions for Bob's windmill, but when Wendy phones Bob he says he doesn't need them. Back at the yard, there's one finished Bob-sized windmill.

Bob is putting up a rainwater tank next to Farmer Pickles' barn. When Bob goes away, Spud persuades Lofty to lift the rainwater tank into place, but it rolls down the hill and smashes the wooden boat Wendy has made for her nephew!

Bob and the machines are refurbishing the bandstand where Farmer Pickles is set to be the conductor. But the sheet music falls off Travis' trailer and when Spud finds it he decides to make paper planes! Will Farmer Pickles sadly have to cancel the band?

Farmer Pickles asks Bob to build a dog house for Scruffty, and drops his phone. Mrs Percival phones to remind Farmer Pickles to look after the guinea-pigs for the school holidays, and Wendy answers it. Wendy sends Scoop off with the phone and the message, but he passes it on to Spud, who passes it on to Travis. When Farmer Pickles gets the message, he thinks he's getting a delivery of little pigs and realises he has nowhere to put them.

Mrs Percival is raising money for a new clubhouse. Bob decides to do a sponsered runathon and the machines decide to do a sponsered demolition of the old pavillion.

Bob's new personal organiser has details of all his jobs, but it breaks down. Bob then decides to tie knots in his handkerchief to remind himself. He gets all his jobs mixed up! At the end of the day, Wendy reminds him what his last knot was for.

Roley gets excited when Bob builds a pond in his favourite rock star's garden.

Bob is building a time capsule for Mr Ellis. It is to be buried outside the museum and in 100 years time someone will open it. However, when Spud finds it, he takes it away thinking it's a treasure chest! He throws everything out of it and plans to bury it himself. Will someone find Spud and the missing time capsule before Spud buries it?

Wendy is in the countryside on her day off, doing some watercolour painting. But Scruffty buries her phone. Meanwhile, Bob and the machines are laying flagstones to make the town's coat of arms.

Travis has to deliver a load of gravel. Scoop offers to help him and Spud gets a ride aboard. However, Spud unhooks the trailer to give Travis a rest and rolls away! Meanwhile, Wendy and the machines are putting up a signpost at the crossroads.

Wendy and the machines are building a new path for Mrs Potts. Mrs Potts won't let Roley work on the path because she is worried he will crush the flower beds. Roley feels hurt but feels better when supervising Wendy with the hand-roller. However, Muck accidentally drops the flagstones and they break. But Dizzy comes up with a bright idea.