"There is a cancer eating at Equestria. With each day it advances deeper, leaving drained, dead towns in its wake. This horror, this abomination, has thought and purpose that functions on an unimaginable scale and all we can do is try to stop the swarms of bioengineered monsters it unleashes upon us almost by instinct. We have given the horror a name to salve our fears; we call it the Tyranid race, but if is aware of us at all it must know us only as Prey."