"The Tyranids have come from the cold, dark void beyond the edge of the galaxy, on a tireless search for biomass to consume. Now, Hive Fleet Leviathan – but a single colossal tendril of an even greater whole – approaches Holy Terra itself. In this episode of Loremasters, learn about the Tyranid invasions and the Hive Fleets behind them. Discover how the Imperium and other forces fought back during previous Tyrannic Wars, and what the Tyranid threat means for the galaxy as the Fourth Tyrannic War explodes onto the tabletop in the new edition of Warhammer 40,000."