Marcus Barber, the immortal Roman centurion, must rescue his friend, Eddie, from the grips of maniacal mercenaries hired by Marcus's former lover, Joelle. In addition to saving Eddie, Marcus must also track down the location of the Egyptian Ancient, Apep, and prevent a cult from using the Ancient's essence to poison the Riverwalk area of San Antonio. All the while, he continues his quest to find his father and has a side gig of stealing corporate documents for a white-collar espionage job.