Civil war rages in Ethiopia. A priest waits to die in a parched prison cell; he has not seen daylight for four decades. But then a mortar shell hits the compound, and the prisoner and his secret are set free. Two reporters and a beautiful photographer save this wounded man, who tells them something too incredible to believe: the location of the Holy Grail. Thus begins an impossible quest that will pit them against murderous tribes, deadly assassins, fanatical monks and, ultimately, themselves.