Echo makes a simple living, sorting through trash for anything of value. But one day, he finds a girl in the scrap field, and suddenly, the legendary Players who pilot mecha called Equipment to fight the Earless aren’t just stories from faraway places.

Running away from the aftermath of their first battle against the Earless, Echo and Mu are once again ambushed by the Earless. Plus, the mysterious trio of women who tracked them down aren’t far behind.

The trail to solve the mystery of Jimi Stonefree leads Echo and Mu to a glittering purple city ruled by Denka.

After running away from the Freak Scene Academy, Nir arrives in Londinium to find a bleak city with two angry youths eager to show up the government's handling of the Earless.

With Mu's awakening, Tommy has big plans to do the Freedom Project right this time. In the meantime, Echo runs into Nir on the streets of Londinium.

With the appearance of Listeners, King of the Earless, the Earless have grown ever more destructive. Roz, Denka, Kevin, and Bilin must each decide how they want to face this crisis.

The Earless seem unstoppable, bent on destroying the world that has treated them so cruelly. Echo, with his newfound power as a Player, challenges the King of the Earless with his trusty AC30.