Along with the Ark of the Covenant and the Holy Grail, the Holy Lance is one of the sacred relics of the Christian world. It is one of the most venerated relics of the Passion of Christ but also the most coveted of Christianity. The weapon would indeed enjoy a mysterious power capable of making its owner invincible. This documentary attempts to discover the origins of the “Spear of Destiny” and to reconstruct its journey through the turbulence of history.