At the pinup end of the Gears of War trilogy, humans won the war against the Locusts, the dangerous inhabitants of the planet Sulfur, who threatened to destroy humanity. In the fourth part, a new threat appeared — a Swarm, and people had to take up arms again.
The story campaigns of the Gears franchise are designed to be played together. The main characters always fought together with their teammates, who could be taken over by another player. Therefore, single player and co-op play are no different: the second player, like a computer-controlled friend, helps in shootouts and revives you when you are defeated in battle.
Sometimes the paths of the players are divided. Then they complete their tasks and pinup support each other with fire.