Roxy and Steve live in Shrewsbury with their young children Ted and Betsy, but their blank and boring garden has nothing exciting for children. In fact, it's so bad that when Ted and Betsy's nine-year-old cousin came round to play, she complained there was nothing to do in the garden! It's time for firefighter Steve to call in the garden emergency services. Can Charlie Dimmock and the Rich brothers, Harry and David, come up with a plan to turn this suburban patch of grass into a kids' playtime paradise? As ever, the two design teams go head to head to create the winning design, with the garden owner having to pick the one they like the most. Who will Roxy and Steve pick to design their garden, what will the results look like, and - most importantly - will the kids and their cousin give it the all-important thumbs up?