Brady is tricked at a Paris airport, and has his bag and passport stolen - a criminal disguised as Brady uses his passport to travel across to England with a suitcase full of cocaine. Annoyed at this, Brady offers to help the police track down the dealers in London.
When a scientist at Brady's lab suddenly burns all of his papers and runs away, Brady sets out to investigate and discovers that he wasn't entirely acting of his own accord.
British scientist Peter Brady, while working on an invisibility formula, suffers a tragic accident which turns himself invisible. Unfortunately, there is no antidote, so, while working on a method to regain his visibility, he undertakes missions for his government stopping bad guys.