As the Tyranids attack an Imperial colony, can a family get their newborn child off-world and save its life? This episode of Hammer and Bolter offers a terrifying insight into what an invasion looks like through the eyes of lowly hab-workers as they contend with riots, Astra Militarum defence lines, and the oncoming xenos swarm.

As a Chaplain and Judicar from the Exorcists Chapter interrogate a warrior from the Emperor’s Children about Lucius the Eternal, they don't realise they are about to learn more about the chosen son of the Dark Prince than they ever thought possible.