Having prevented the ferocious Bloodfiends from bringing disaster to their homeworld of Baal, the Blood Angels go in search of the renegade who almost destroyed them - Fabius Bile. Tracking the Chaos traitor down to his secret base on Dynikas V, a world beset by alien tyranids, the Blood Angels find horrirs more terrible thatn even they can imagine. The Blood Angels must retrieve the stolen sample of their primarch's blood before Fabius Bile can bring his evil schemes to fruition.