Tosaki has been captured. Izumi rushes back to the hideout and insists they rescue him. Initially refusing, Nagai ultimately leads a team to rescue Tosaki from the Americans.
Nagai and the group pursue the Americans and Tosaki. Izumi manages to catch up with them and ultimately rescue Tosaki. Unfortunately, this means they missed their window to catch Sato.
Tosaki manages to get his team allowed into the building where Sato's next target is. Just as the clock ticks closer, a truck rushes in and sets off an E.M.P. bomb, rendering all electronics and new anti-Ajin guns useless. Sato charges in for an old fashioned gun fight.
Sato and his group lead their assault. Nagai and his group prepare to intercept Sato, but Sato is too well prepared. Just when Nagai thinks he has Sato, it's revealed that Sato's IBM is similar to Nagai's.
Nagai and the group return after being defeated by Sato. Nagai struggles to deal with his failures. Sato continues towards his third and final wave, an Ajin run Japan. Tosaki tries to mobilize everyone once more to stop Sato, but Nagai refuses.
Unrest begins as Satō-san releases a chemical weapon onto the population. People begin trying to attack the families of Ajin. Nagai saves his sister with the assistance of Kaito. Nagai entrusts his sister into Kaito's care.
People from Satō's group desert and make contact with Nagai. The US plans on releasing the chemical weapons on Satō in the sewers. Tosaki is called and asked for assistance, which leads Nagai and the group to go after Satō once more.
Satō emerges from the rubble as he blew up an existing tunnel below to escape being crushed by Nagai's plan. Satō begins to hunt Nagai and the others as they attempt one last attempt as stopping him before the military unleashes a gas attack.