In an attempt to eliminate RED, BLU is activating Installation 04c, the replacement for Installation 04 and Installation 04b, by capturing the control points. As the control points are captured, doors unlock to better expose other control points, such as the final control point in the control room that activates Installation 04c and causes BLU to win.
M3 is also an author of this map.
This map can be installed normally. (If Steam is installed in the default location, this map can be put in the following location: C:\Program Files\Steam\SteamApps\common\Team Fortress 2\tf\maps .)