Charlie Small is twelve years old when he falls through a gap in space and time and ends up in a series of adventures which he records in a diary format. Packed full of fun illustrations, maps and clever inventions, Charlie's sixth adventures takes him to the fearsome wilds of Frostbite Pass, where he needs to get past a seriously slobbery Swamp Monster with just his quick wits and handy rucksack - will he get to Jakeman's factory in time? And could that really be Father Christmas coming to the rescue?