Two young men learn how to hack into hospital systems and then into pacemakers implanted in patients' bodies. They use this skill to blackmail wealthy people with the fear of stopping their hearts and demonstrate that they can do exactly that. In a few cases, they kill the victim who resists paying up. They are persuaded by a man with Mafia connections to work with organised crime and extract state and military secrets from senior personnel in the security forces and military. This becomes a matter for the security forces in the UK, USA and Australia where the attacks have taken place.