Join fearless explorers, Feargal Munge and Spoonface Muldoon, as they embark on their biggest adventure yet - finally climbing the mountain at the bottom of the garden.
Facing perilous explosions, floods, fires, damp socks and fan mail, 13 year old Feargal is determined to have the mountain named after himself.
After all, Mount Fangdoodle is a terrible name for a mountain and surely there are no such people as the Fangdoodly-Bums?