Many years have passed since humanity was driven to the brink of extinction by the sudden emergence of the unknown life forms Gadoll. Those humans that survived now dwell during a 3000m-high mobile fortress Deca-dence built to guard themselves from the Gadoll threat.
Denizens of Deca-dence fall under two categories: Gears, warriors who fight the Gadoll daily, and Tankers, those without the talents to fight. One day, Natsume, a Tanker girl who dreams of becoming a Gear meets surly Kaburagi, an armor repairman of Deca-dence.
This chance meeting between the seemingly two opposites, the girl with a positive attitude who never gives abreast of her dreams and therefore the realist who has given abreast of his, will eventually shake the longer term course of this world.
Aired: Jul 8, 2020 to ?