Red vs. Blue: MIA is a six-part mini-series that celebrates the release of Halo: Combat Evolved Anniversary. The story chronicles the misadventures of the Red and Blue teams searching for Grif while inside the Epsilon Unit. It takes place somewhere in between the beginning and end of Red vs. Blue: Season Nine. The series was first announced at Halo Fest and the first episode was released on Halo: Waypoint on November 13, 2011. MIA is the longest running mini-series of Red vs. Blue, with six episodes.