In an alternate timeline the original Godzilla is never defeated and repeatedly reemerges to feed on Japan's energy sources. A new inter-dimensional weapon called the Dimension Tide is created with the intent of eliminating Godzilla. However, the new weapon might also serve as a gateway to something far more sinister.

Misato Tanakaas Major Kiriko Tsujimori
Shosuke Taniharaas Hajime Kudo
Masanobu Katsumuraas Makoto Nikura
Mansaku Ikeuchias Master Sergeant Kazuo Mima
Makiya Yamaguchias First Lieutenant Seiichi Hosono
Toshiyuki Nagashimaas Captain Takuya Miyagawa
Katsuo Nakamuraas Dr. Tsuyoshi Yamaguchi
Kazuko Katoas Kaoru Hayasaka