Episode 1: Paying the Ferryman
Marines fight aliens for first time on Harpers Island. XCom comes to save them. They join XCom. Admiral Greer and Professor Tregaer take command.
Episode 2: The Interrupted Journey
Investigating an abduction uncovers a UFO base. Interceptors are lost, Men In Black are encountered.
XCom troops encounter Wedge UFO. Troops fight aliens in former Yugoslavia. Wedge shoots down saucer. Greer thinks Wedges might be friendly.
Greer & Tregear go to Berlin for EC inquiry led by Tregear's old enemy Emma Myers. Saucers launch massive attack on Luanda in Angola. Greer threatened by MIBs, Myers abducted, Tregear learns to shoot.
Greer and Tregear visit England, find Tregear's friends slaughtered. Run into MIBs and capture one.
Episode 6: The Devil and the Deep
XCom interceptors intercept and shadow a Wedge. It drops troops on an island in the Baltic. XCom ground troops end up fighting Golden Androids. Greer decides Wedges are not friendly.
Episode 7: The Ceremony of Innocence
XCom interceptors are suckered out into the Atlantic, to allow 'mothership' to land in Uzbekistan. XCom caught between Uzbeki and Russian invasion at research station. Aliens defeated after station is wiped out.
Fertility clinic suspected of alien link. Tregears former colleagues disappearing. Greer goes to Switzerland, trashes baby clinic, Tregear goes to England to save friends.
Episode 9: The Streets Run Red
Two motherships land in Berlin. Big fight, many dead.
Episode 10: A Voice in the Shadows
US space shuttle Atlantis lost, believed captured by UFOs. XCom trace shuttle to tiny pacific island nation of Nauru. Taken over by Aliens, the island is one large base. XCom & US Marines invade and retake island.
Crashed Wedge UFO is used by Androids to introduce a nanotech plague. XCom is nearly destroyed, but the scientists discover a cure just in time.
XCom chases after a de-activated android being sold on the black market, while the trail of a murder at XCom leads straight to the one person everyone thought they could trust.