Act I is the first act of Gears of War 4. It features a flashback to three past battles - Aspho Fields, Emergence Day, and Anvil Gate (at the time of the Imulsion Countermeasure's detonation). Also featured is JD Fenix' raid on Settlement 5, Jinn's retaliatory Deebee assault on Reyna's Outsider village, and the kidnap of the entire village by an unknown race of creatures.