Bob's crew are nervous as they start work on the Sunflower Valley project, but Muck claims not to be afraid. However, her confidence soon disappears when she and Spud get lost in the woods.
The machines get to build their brand new shelter. Lofty, who slept outside at the old yard, decides that he'd like a place in the new shelter - but doesn't know how to let Bob know.
Bob's dad slows him down, making Bob wonder how they are going to get everything done in time, but there is more to worry about when the older man disappears at the recycling plant.
Scoop and the machines are in Sunflower Valley setting up Wendy's caravan. Meanwhile, Bob searches for Robert, who is preparing a surprise for Wendy at her new home in Sunflower Valley.
Scoop has to work so hard to please everyone that he wishes he were two diggers. Robert makes Scoop's wish come true and calls the machine hire company for a second digger.
Spud thinks Farmer Pickles is building a new scarecrow to replace him, but it turns out that he has asked Bob and the team to build a house made of straw for him and Spud to live in.
Scrambler is given the job of keeping Scruffty the dog out of the way while Bob and his team construct a barn for Farmer Pickles. It turns out that looking after Scruffty is more fun than Scrambler thought.
Dizzy is full of questions when she meets sunflower factory expert, Marjorie. The rest of the team get fed up with Dizzy's questions so the little cement mixer doesn't ask any more and messes up her work.
