Sent to investigate a location inside Ammon's domain, Vanessa and Monty encounter more than what they were expecting, as servants of another Infernal Archduke are infringing on Ammon's turf. This encounter will wake up lost memories for Vanessa, who will have to wrestle with the traumas of her past while at the same time facing off against the dangerous cultists of the Crimson Order. Vanessa and Monty will wage battle through the old sewers of the city, aiming to exterminate the intruders while finding out the reason for their invasion.