Hosted by Alan Titchmarsh, our underdogs will be trained by experts to do incredible jobs. Each has a vision for what these dogs could achieve; from finding people lost in the wilderness, to rescuing from water, or a film stunt dog. We join them for the highs and lows of the training process, but time is ticking... each of them must undergo a final challenge. Will these underdogs have it in them to become superdogs?