Act 2 įive months have passed since the capture of the Brain Bug, and Arachnid Egg Fall Clusters have been attacking various planets in Terran-controlled space. The act ends with the player's platoon in a cave labeled 'Bug City,' where the player's platoon facilitates the capture of the Brain Bug. The last two missions for this act take place in Planet P on February 28 and March 1, 2370, where the player is deployed to secure Whiskey Outpost while capturing further bug specimens. Shortly after Zegema Beach, the player's platoon is deployed to the Arachnid Quarantine Zone in Dentana to save the local civilians in the area, while capturing a live Arachnid specimen in the process on January 20, 2370. Shortly after Klendathu, on November 23, 2369, the player's platoon is sent to Zegema Beach to extract a supply convoy in the area. The player's platoon, however gets stranded during the evacuation and is forced to deal with Plasma bugs to facilitate extraction, while saving any allied MI squads in the area. On October 18, 2369, the player's platoon is first deployed to Klendathu at the start of the war only for the mission to end with a general retreat. The game is divided into three acts following the player's Mobile Infantry platoon from the start to the end of the war.
