A few days after the Death Gavan Fleet Invasion Incident, the escaped convicts resumed their evil activities across various dimensions. To stop them, Setsuna, Kiki, and Kunai each find themselves fighting their respective arch-enemies. However, with the Gavan System shut down, they are unable to transform into Gavan, leaving them in a dire predicament... Meanwhile, Reiji, who was also in the midst of battle, was suddenly enveloped in a bright light and found himself face-to-face with the Supreme Chancellor in a mysterious space...