Following his late father's will, Yuu Tagami travels across the world to New York City in order to find a former student of his father's, Dr. Wave. Upon meeting the man however, Yuu becomes entangled in a vast conspiracy to keep New Austral Island, a mysterious landmass that suddenly appeared in the South Pacific, a secret.

Chitose finally starts to understand the situation that she's in. Her one asset of being more confident than anyone else was starting to crumble, and she couldn't hide her somber mood at the sessions. On the other hand, the rest of the cast seems to be in high spirits with Nanami at the center. Chitose sees that and feels even more depressed. Yae tries to cheer her up, but none of her words are reaching Chitose. Seeing Chitose like this, Koto is reminded of someone else in the past...

Tokine solves Quizun's most complicated riddle yet. But is it really the end, or the beginning of something new?

After saving the world, Super Shiny Galaxy is supposed to hold a concert for all the people in the world. But... where are the idols themselves?!

Thanks for thinking of me all the time.

Three days have passed since the Oomukade attack, and Kiitaro is still unconscious. Suzu and all their yokai friends wait close by for him to wake up.

Haruma's words stab at the hearts of Ren and his friends. After their crushing defeat at Haruma's hands, the team lies broken. Amid the gloom, the strike ring glows —a faint flicker of hope that brings the promise of a new meeting.

The team is locked in a desperate battle against Underworld Rebel Lucy. Blasted by a fiery energy circle, they fire off their Strike Shots, only to be denied by an impervious barrier. How will the dice fall?

The team searches for Haruma in Shibuya. A gigantic monster gate appears. As Ren and friends prepare for a throwdown, a mysterious attack destroys the monsters. Could it be, Haruma?

Ren and his team manage to escape from Doom's grasp. Monster Strike and all the strange happenings associated with it leaves the gang with more questions than answers. K's prophetic words linger—"The answers lie in your past."

Kamui goes berserk, and Fox Metal falls out of the ring. Doom's strength devastates the entire party. All appears lost, until Ren begins to figure out the rules.