Bob Uses recylable material to build his model town and his concept wins the prize. With a great fanfare Bob and his machines leave Bobsville for the breathakingly beautiful Sunflower valley. Surrounded by the vast emptiness fo it all they vry Can we build it? Yes we caaaaaaaaaaaaaa. Scrambler and the Colourful Cave Bob is building an extraordinary new cave house for Sandy Beach a canveman expert who''s moving to the valley to study how cavemen used to live.The team are all head into the mountains. At the site Dizzy decides that Sandy''s cave house would lood much nicer with a splash of colour and Sandy agree. Scrambler who can''t wait to do some serious mountains off roading is disappointed to be given the job of finding the perfect thing to brighten Sandy''s cave. Spud''s Bumper Harvest Bob''s just finished tidying his moblie home when Farmer Pickles comes and asks if he''ll help with his Sunflower Harvest.He needs a silo built in which store the ripe sunflowers before they''re taken to the factory.Spud meanwhile decides that it would be a good idea to harvest the sunflowers now to stop his old nemeis Squawk getting to them. Spud the Harvester gets to work chopping down the sunflowers - covinced that Bob won''t take long to build the silo. Muck''s Convoy Bob''s built a new waterwheel for the old watermill.