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.

Echo and Mu's first stop in their investigation into the mysterious Jimi Stonefree is Freak Scene Academy. There, the academy's director offers them the school's file on Jimi in exchange for their help.

Echo and Mu continue their journey to find Jimi and end up in Londinium. In Londinium, Mu is asked to participate in their plans for Christmas, which is one week away.

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.

Echo finds himself in the strangely tranquil town of Clarksdale, where he learns a little more about Jimi and a little more about himself.

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.