When Botanist Dr. Yurei Churchill discovers an extremely rare plant based organism that has the properties to repel The Flood parasites, the UNSC contracts her and attaches her to an elite groups of ODSTs (Orbital Drop Shock Troopers), or Hell Jumpers, known as Whiskey-6. Dr.Churchill must work with Staff Sergeant Schmeltzer and his team to find this rare organism on the planet Halfax but little do they know that someone else yearns to find this plant.