I Dream of Being a Concrete Mixer is an uplifting story about the power of friendship, about finding your place in the world, and about realizing your dreams while remaining true to who you are. Tumbledown is a little demolition truck growing up in a loving family. His parents go to work every day demolishing buildings with their big wrecking balls. But soft-hearted Tumbledown does not like to destroy. He would rather build things. He dreams of being a concrete mixer.