In 1902, Adam Adamant is lured into a trap by his arch nemesis 'The Face' and frozen in ice for eternity. That is until he is accidentally freed by workmen in 1966. Bewildered to find himself in the Swinging Sixties, Adamant is taken in by mod girl and lifelong fan Georgina Jones. When Georgie's grandfather is killed by a couple of thugs, Adamant decides his services are once again needed.
Adamant rescues Georgie from two motorcyclists who were chasing her because of a stick of rock candy. Inside they find a incomprehensible diagram which leads them to Blackpool to investigate. When Punch and Judy man William E. Simms overhears the villains plotting to kill Adamant, he decides to intervene.
The conveniently-timed deaths of a number of rich businessmen appear to have taken place shortly before they were due to receive large tax demands, arousing the suspicions of the Inland Revenue. The only common factor seems to have been their psychiatrist; Adam Adamant, posing as a harassed financier, makes an appointment with the man, who concludes from his patient's unusual mental history that he is suffering severe delusions and takes the opportunity to prescribe a stay at a sinister health resort.