'Have you met Marge? She has rainbow hair, tells wild stories and she's the best babysitter in the whole world. Things do SOMETIMES go off the rails when Marge is around but Jakey and Jemima don't mind that. Marge is back and this time she's taking the Button family on a train journey. When Mum and Dad go out for a 'romantic' (i.e., BORING) dinner, Marge takes the kids on an adventure of their own. Jakey's always longed to drive a train—and with Marge around to turn ordinary life extraordinary, there's a good chance his wish might come true!'
Source: Publisher's blurb.