Following a near death experience, Harold Carey develops the ability to faultlessly memorise information about antiques. But Harry is facing financial ruin, due to the scheming of his corrupt bank manager, a neighbouring landowner, and a violent crime boss who need his smallholding in order to develop a giant business park. Harry's situation is further complicated by the involvement of the Intelligence Services, who commissioned a psychologist to develop subliminal memory techniques, which Harry was accidently exposed to while in a coma. After several attempts to pressure Harry into selling, the local police get involved. Corrupt police officers, in the pocket of another criminal organisation, leads to a deadly reckoning between the rival gangs. Harry's friends rally round, and with the arrival of a hitherto unknown sibling, resolve to help Harry overcome his problems.