When Jesus was supposedly crucified 2,000 years ago, it is said that a Roman guard thrust a spear into his side to see if he was still alive. Based on that story/myth, a central tenet of Christian faith was conceived: Jesus had died, then risen from the dead. From that moment the spear that supposedly pierced him became a powerful holy relic. What happened to the spear thereafter is a heady mix of myth, half truth and fact. To confuse matters further, today there are three spears claiming to be the Holy Spear. This legend of the Holy Spear follows two investigators attempting to discover if any of the 3 spears could have been present at the crucifixion. Scrutinizing each spear and closely analysing the stories and legends behind them, the film reveals astonishing clues as to their provenance.