Poppa has to leave his wonderful house and his garden to move into an apartment in the city. He and Theo miss his garden. They think about the possibility of making a plastic garden at Poppa's new place. Then, Theo has a great idea. "We could have an imaginary garden." Poppa buys a big canvas and puts in out on his balcony. Together he and Theo create a magical, imaginary garden. They see the blue of the sky and the green of the vines. They add an earthworm and crocuses and even tulips. Then, Poppa goes away on a trip and Theo has to take care of the garden all by herself. Can she do it? Yes, Theo knows exactly what to do.