Daniel Smithson is on vacation in Jerusalem with his wife. Lisa, when a stranger accuses him of being a liar, a thief, and a conman. He claims Daniel has cost him years, time, effort and billions of dollars and promises he is going to make him pay. In subsequent meetings, his would be assassin has no idea who Daniel is. Neither of them realizes Daniel will do things in his future, which are in his attackers past. Daniel discovers how to time travel and goes to first-century Jerusalem, where he hopes to follow Jesus. However, the joy of traveling anywhere in time, is overshadowed with concern over what effect his actions have and why they have already caused a stranger to try to kill him. More urgently, what should he do with the live grenade he is left holding?