Starting out approximately one day after the events of the previous battle, Kouji has been taken into custody by Ankokuji, while Shiro remains at the police station, as Ankokuji argues with Kouji about just how responsible he was for Atami's destruction. Meanwhile, Sayaka and the Mazinger Corp. have returned to the Photon Research Facility, and consider the sheer power of Mazinger Z, reflecting on Kouji's outburst the night before. Dr. Hell, Count Brocken, and Baron Ashura also reflect upon their previous defeat while on board the Flying Fortress, Ghoul. Later, Prof. Yumi tells Sayaka of his early work with Dr. Kabuto: Their discovery of Japanium, Juuzou's sudden disappearance, and the fact that he, in truth, chose to perform the Photon Energy tests in Atami in order to lure Dr. Kabuto out, so that they could complete their research together.
As Ankokuji's search for the Pilder continues, Kouji continues to insist that he does not know the whereabouts of the craft. Despite this, Ankokuji plans to interrogate Shiro in front of Kouji, in order to force an answer out of him. Around this time, Shiro, who had been sleeping in the Police Department, wakes up to find the bodies of numerous officers. As a pair officers slowly approach the office to fetch Shiro, he overhears their plan, and is forced to hide, causing Ankokuji to send even more officers out to search for him. In the midst of all of this, Prof. Yumi and Sayaka become suspicious of Ankokuji's entire operation, noticing that the number of officers out searching for the Pilder far exceed those that would normally be present in Atami, and dispatches Sayaka in Aphrodai A. Shiro finds Kouji locked in his cell, before Ankokuji comes to attack them; as he lunges towards Shiro, Kouji grabs the detective's face, causing his "skin" to tear off.
Having summoned Nonakargo in the previous episode, Baron Ashura reveals its true ability - the machine can open up its torso and capture other machines with an electromagnetic net. Currently locked inside is Aphrodai A, the result of their confrontation in episode 7. As Ashura escapes and orders Nonakargo to capture Mazinger Z, Tsubasa tells Yasu to send out "the signal" in the form of a firework. This signal turns out to be the command to summon the Pilder, which was actually hidden underneath the Kurogane house, sending it (and Ankokuji, who fell on top) flying towards Kouji's location. Meanwhile, Boss and his cohorts who were originally planning to steal Mazinger Z decide to flee, since Nonakargo is approaching them. However, they're stopped by a strange new character in a sombrero, who is revealed to be another member of the Kurogane House - the sharpshooter Django.