
Determined to achieve his own mysterious ends, Shin, the captain of Spearhead Squadron, which is comprised of Eighty-sixers, continues to fight a hopeless war on a battlefield where only death awaits him," read the official series synopsis, according to Crunchyroll. In reality, they are piloted by the Eighty-sixers-those considered to be less than human and treated as mere tools.

"Called 'Juggernaut,' these are the unmanned combat drones developed by the Republic of San Magnolia in answer to the attacks by the autonomous unmanned drones of the neighboring Empire of Giad, the 'Legion.' But they're only unmanned in name. Lena and the new squad form a bond but Lena still remained cautious because of her last assignment with the Spearhead squadron. However, she was seen leading a new squad and her new teammates love her. In Episode 1 of the second cour, Lena got demoted from major to captain because of her unauthorized use of howitzer during a mission.

In "86 Eighty-Six" Season 2, Episode 2 (Episode 13), after spending their time in the city, Shin, Raiden, Theoto, Anju and Kurena will take an important decision.
