Geoff Summers is a model of loyalty to his wife Penny, and to his long-time employers. A brilliant designer of electronic systems, his values are tested when she falls ill with a brain tumour and his vindictive new boss prevents him from fulfilling her dying wish. With nothing to lose, and now driven only by a visceral desire for revenge, he uses his design skills and inside knowledge to devise a plan. It doesn't come without risks, including a foray into the world of organised crime, putting his own life on the line. Time to fight back and hit them all, where it hurts. And maybe, survive to start a new life.