Molly adores her Granny Moo. She visits her every week and loves to stay up late listening to fantastic tales about her adventures. Molly's Mum and Dad reckon that Granny Moo just loves to tell 'tall' tales. But one day, Granny Moo goes missing! Molly sets out to find her Gran and gets caught up in the most amazing and unbelievable adventure. An adventure that involves mountains and magic, a journey in a jungle, and a walk down a very special set of stairs. An adventure that convinces Molly once and for all, that maybe Granny Moo's tales aren't such tall tales after all...