Tulip and Max were famous at their school, for two reasons: 1. They were fearless adventurers. 2. They went everywhere with a curiously quirky companion – a rock called Susan! Tulip, Max and Susan loved creating coded messages, unearthing precious treasures and practising their hide-and-seek skills on Tunnel Mountain. When Max and Susan head away on holiday, Tulip and her dad go on an expedition to the jungle. What will Tulip discover there ... could it be her lost friend Doug? Another spud-tacular story from this talented duo.