There are those who sacrifice themselves in an effort to save humanity from the brink of extinction in the Human-Covenant War. Post Covenant War the UNSC has to contend with Covenant Splinter-groups and Forerunners. Follow the events of Y/N's Fireteam as one of their missions went wrong. Formally declared M.I.A. but were transported to the RWBY universe. Disclaimer: Halo owned by 343 Industries and RWBY and RedvsBlue by Rooster teeth.