"When a routine freeze ray demo leads to the death of Mr Nesbitѫs prize-winning chameleon, Danny and Percy are sent to jiu-jitsu lessons to ѵlearn some disciplineѫ ئ YAWN! Instead their friendship is tested as never before. Can building the worldѫs greatest killer robot bring them ئ and the whole class (EVEN twit-faced Gareth Trumpshaw) ئ together?"