York is a lad on a mission. So would you be, if your space station habitation was constantly attacked by evolved, mutated and evil robots. Trying to get to the core of things – both the situation and the centre of the giant biosphere carrying the last humans to a future planet to reside on – he's just starting to enter the second level, alongside some surprising companions (surprising, that is, if you haven't read [[Scavenger 1: Zoid by Paul Stewart and Chris Riddell|book one]]) and a lot of gung ho spirit. The next stage is a 'mid deck' level, where all of Earth's habitation zones have been recreated – but nothing, either animal or human, has stayed the same since the ship's launch…