It was a dark night on planet XN294. A pitch black cave, exposed by the light of the planet's moons, writhed with life. Evil, parasitic life. Metroids. Hundreds of them, Infants to Omegas, crawled, floated and stirred in the deep cavern. They were waiting for the call to action. The call to feed. Some distance away from this cave, Nitox the Zoomer and his friend Samus Aran followed traces of Metroid DNA. Zoomers have extremely acute senses, as well as advanced tracking devices, so Nitox and Samus had no problem finding the cave of Metroids. Countless battle strategies were thought up, only to be scrapped. It was nearly impossible to take on so many Metroids at one time. Samus knew that the Metroids were only weak to Ice-based weaponry, and Nitox knew that one arm cannon wouldn't be enough.