John Bull,redundant and depressed sees a jacket in a charity shop window which unbeknown to him has an historical relic in the lining. He's drawn to the jacket but he doesn't know why. Forces from the 15th century have chosen him to return the relic to them, and are manipulating his every move. They chose him for good reason. Back through several previous lives, he had proved himself to be resourceful, brave and capable. The forces have developed a way of transporting someone in time & John finds himself inexplicably interested in regression. His friend Sam tells him that he's mad to be regressed, but he does it anyway. Instead of going back to the 15th century where the forces are waiting for him, he is redirected to his other lovers & lives. He has to drop into his old body in each life, until finally the process is perfected, and he finds himself sitting at a table with one of the greatest men in history. He falls in love with his granddaughter and makes her pregnant after a raunchy night of sex with her.