A terrifying trip into yesterday. A man enjoying a quiet life, Mike Blake steps out of his front door one morning to find himself in a different time dimension, where everything looks the same but everything is different. Anita, his wife who is incapable of normal sex and averse to any other kind, he discovers is a raging nymphomaniac, though still wants nothing to do with him. His lover disdains him, but the girl he has always fancied is all over him. Because he can, and in order to help his business partner, he plays the lottery and the horses - his big mistake. It brings him to the attention of two organisations who use those capable of crossing the dimensions, one on the side of law and order, the other a nest of terrorists. Anita is abducted by the terrorists, leaving him little choice. Against his will he carries out tasks for them, while also working for the other agency, keeping the two threads as separate as he can, believing that there is a traitor in the apparently lawful organisation. Always looking for a way out of his dilemma, he at last, with the help of a good friend, devises a method that might just work...