Renton Thurston is a 14-year-old boy, who leads a normal, yet boring and uninteresting life with his grandfather mechanic at a backwash town. One day, a mysterious mecha LFO referred to as the Nirvash typeZERO comes by their garage, and the pilot within is the most beautiful girl Renton has ever seen. But the next day, her arrival has attracted much of the United Federation Forces, and she is forced to stop them at any cost. Renton however makes the most life-changing decision in his life. Will he make it, and will he get the Amita Drive to the pilot of the Nirvash?

It's the finale episode and Eureka completes her transformation in order to save the planet. Holland and the others discover that the Limit of Life phenomenon hasn't happened. Realizing that Eureka is still alive, can Renton save her in time?

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.

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.