Tom Greenbaum and David Goodman, brilliant quantum physicists, have achieved the seemingly impossible - they have created a device that allows you to travel through time. Now is the time to try out their invention. Tom has an old dream. Once upon a time, twenty years ago, in Zambia, in front of his eyes, the natives killed his beautiful wife - only because she did not renounce the Christian faith. Now Tom is going to be transported to ancient Galilee to meet there... Jesus. He wants to tell Christ that he is no god, but simply a swindler; after all, he did not save Megan, who believed in him. David goes back in time with Tom. They do not yet know that, by the will of fate, Jesus will include Tom among his twelve disciples and call him Gemini Thomas...