Following a hair-raising adventure last summer, Abbie Hartley can't wait to join her friend Perdita on the trip of a lifetime. Their destination? The Amazon jungle. Their mission? To find the lost wife of their friend Fernando. There's only one problem. Fernando and his wife are shrunken heads ... and the Amazon jungle is huge. Oh, and another one. Squashy Grandma insists on coming, with her shopping bag on wheels and her pet wig. Oh, and just one more. Abbie's arch-enemy Dr Hubris Klench, burger-on-legs and villain extraordinaire, is lurking in the undergrowth with some very wicked tricks up his very wide sleeve.