Inquisitor Ivan Sternberg requests the aid of the mighty Space Wolves Chapter in the recovery of the ancient Talisman of Lykos, which he believes can cure the corruption ravaging the planet Aerius. Ragnar Blackmane and his squad of Blood Claws embark on a near-suicidal mission to retrieve the talisman before it is too late.

Read it because

It's a rip-roaring action adventure tale that pits the Young Wolf and his pack against the might of the forces of the Plague God. It's got a very memorable Great Unclean One and an insight into the Space Wolves' relationship with the Inquisition.