To defeat the Planetary Gears once and for all, the Midsummer's Knights prepare to depart for Uranus in order to destroy the enemy spaceship and render them powerless as part of their master plan, the "Operation Summer". However, Ai, disguised as a model on a PR event, infiltrates the Tenkaido space station to stop them, and the situation gets even more hectic when Salty Dog makes their move as well.

Puck takes control of Blume while possessing Hana's body and leaves to consume all life on Earth. With the Planetary Gears defeated, Daichi is the only one left on Puck's way, fighting with all his forces to stop it and rescue Hana.