A resistance in brink of defeat , turns their greatest foe into their greatest ally.

Followed by the events of Half Life 1 and the midst of Half Life 2 , a resistance in City 4 prepares for their last stand against the raging Combine forces. Their last hope is to execute the Lambda Protocol but ends up being in a failure that turns into a revolution that will change the fate of the mankind.—Yigit Sakin