Oscar is not looking forward to his grandfather's arrival this weekend - it means endless rounds of chess or Monopoly instead of playing war games on his computer. However, when he discovers his dad's ancient computer in the office, he can't resist logging into something called Project X - and soon Oscar creates a real warrior, programmed to obey his every command. However, Montroso's wires are more tangled than they seem, and Oscar finds himself in incredible trouble... Mad battles and monsters flood through Charlie Higson's incredibly entertaining story for younger readers.