The Gouraiger and Sargain search for a mysterious mineral associated with the Ikazuchi ninja, with the Hurricaneger fighting to prevent it from falling into their hands.

The Gouraiger and Jakanja try to discover the means behind "that" using a special Ikazuchi prediction device as the Hurricaneger are distracted by a Chuunin summoned by Chuuzubo.

Teleported to a strange island, the Hurricaneger must defend themselves against both the Gouraiger and Chuuzubo, even as Ikkou realizes the horrifying truth regarding the path to "that".

With Ikkou enraged by the power of the island, Isshuu must come to grips with the dark past of the Kasumi family in order for he and his brother to find a new path forwards.

Still desiring to revive the Ikazuchi School, Isshuu gains his father's infamous sword, leading to a horrifying revelation about its means and measures.