Tumbler, the big and booming cement mixer, arrives in the Valley to help build the Bobland Bay skate park. Dizzy is given the job of showing him around. Tumbler's larger-than-life arrogance becomes a little too much for Dizzy and Tumbler is soon all alone in Sunflower Valley. By displaying a little humility, he finds his way back to his new friends! Flex the cherry-picker arrives just in time to help replace the lens on the Sunflower Valley lighthouse. Flex is so desperate to do a good job that he pushes himself a bit too far and gets the new lens stuck in a tree! He helps solve the problem and learns that everyone loves him just the way he is.
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