Using Oratorio 8, Colonel Dewey fired on the Scub Coral Control Cluster and destroyed it. Now that it's gone, what is Dewey's next move? Meanwhile, Renton and Eureka are in the damaged Nirvash when the Compac Drive turns blue. Nirvash suddenly moves disobeying Renton and Eureka's orders. What is Nirvash trying to accomplish by doing this?

The G-Monster continues its attack on Iwato Jima, and with Gazelle's help Ao pilots an IFO being transported by the Japanese Navy and uses it to defeat the G-Monster, his hair changing color to turquise in the battle, all while Team Pied Piper pilots watch, realizing that the IFO is the first ever model made.

Team Pied Piper is dispatched to aid Team Goldilocks, but upon their arrival, they find that their leader sacrificed himself to save his companions. After retrieving the pilots and their IFO, they return to confront the enemy Secret leaving an exausted Ao behind. After awakening, Ao hears from Chloe, one of Goldilocks' pilots about their battle with the Secret and comes with a plan to defeat it. While Ao confronts the Secret, he is watched by an enigmatic figure who takes an interest to him.

A Scub Burst appears in Phoenix, Arizona and while Team Pied Piper is on standby waiting for an official authorization to intervene, Ao and Ivica get ahead to evaluate the situation. As they arrive there, Ao meets Truth once more, holding a group of survivors hostage while the US Army comes with a different approach to confront the enemy secret with disastrous consequences.

After having a brief encounter with the phased-out Eureka, Renton sets with Ao to Iwato-Jima where he thanks Toshio for taking care of his family and then decides to make use of the Quartz Gun to destroy the original Scub Coral at his timeline and prevent it from spreading itself throughout the dimensions. As Ao confronts him to stop it, he learns that surprisingly, Truth has not fully disappeared, but has become the Nirvash Neo's archtype instead. Ao then decides to make use of the Gun's last shot to change Eureka's fate and have her reunited with Renton. Because of it, Ao is transported to the year 2027 where he bids farewell to Truth and returns to Iwato-Jima to resume with his life, despite the fact that there's a chance that no one in the world remembers about him anymore.