In the quest to find the Nine Gates to the underworld of Styxx and an audience with the great Nagash, Tarsus of the Hallowed Knights leads his Stormcast Eternals to the Blood Wastes. His guide, Mannfred von Carstein, warns that this is a tempestuous land, full of ill intent.

Whilst rescuing a conclave of priests from a Bloodbound warband, Tarsus and his men are forced to seek refuge from a spectral storm in a strange bastion. As the Bloodbound follow them and lay siege, Tarsus discovers this Temple of Final Rest carries a dark secret, one that could either save or destroy them.