In 2364, the wounds of World War III are healed… but they left some ugly scars. In the Rome area (or what’s left of it), radiation still kills slowly and silently. It’s the place Min-Joon Watal - an extremely wealthy philanthropist and heir to the Watal Industries empire – chose to build an underground sanctuary city: Tosca, sheltered from those deadly radioactive waves that poison the Lazio region. But what Watal didn’t see coming is the locals’ resistance to his project: they don’t trust this man who comes from the “Colonies”, these artificial satellites where the rich and famous took refuge, far from the Earth and its agony, its filth, its brutality. Conspiracy theories run wild about Tosca, civilian militias are formed to attack its construction site.
In order to defend his utopia, Watal assembles a dream team of “Harcos” pilots, capable of maneuvering these giant combat robots. The operation is led by Galanos, a veteran who’s as taciturn as he is talented ; Oli, the reserved negotiation expert ; Joa, the medic with a slight paranoia problem, and his wife, Chrys, a bit rough around the edges… and really rough with her enemies ; and RoKo, the Artificial Intelligence who supports them and tries to make them laugh with his corny jokes, alongside his sensitive creator, Thomas, whose innocent and charming smile could melt an iceberg if there were any left.