The Combine have invaded earth, in under seven hours, the earth's forces were wiped out, and the Combine took over. Everybody was stripped of their rights, the laws, and everything were taken away. You have nothing. Your family, they were stripped away from you, you are nothing in the eyes of the Combine. People are enslaved, beaten, and betrayed by their own kind, Wallace Breen. Everything you've worked for is gone, and what replaces it is hatred. You turned to the resistance, the only light in the darkness. You have to fight for change, or it won't happen. You're a simple grunt, but you will fight. The Freeman is here, together, you reign hell on the Combine in City 17. The Freeman is in the Overwatch Nexus building, he's fighting along side Barney, you and the remaining 20 other Rebel Soldiers are outside, fending the Combine from invading the building. Fight to survive, fight for freedom, fight for those who died fighting, and fight for your brethren.