Shuta, Saku and Michiru have been best friends since they were kids. Tragedy strikes the friends when during the winter of 2010, Saku dies from a heart attack. After Saku's death, Shuta and Michiru become more distant. On the third year anniversary of Saku's death, Shuta boards a train in the Enoshima subway. Somehow, Shuta travels back in time to 2010, before Saku died from a heart attack. Although Shuta is confused by the time change, he attempts to save Saku by changing the past.
Sun Fan is a stunt double who dreams of becoming a big star. When he suspects Fang Zi Hao, a famous singer, trying to steal his girlfriend, he beats the living daylight out of Fang. His attack against Fang incurs the wrath of Yu You Tong, who is a die-hard Fang fan. She mobilizes the fan base to attack him online. But to her dismay, instead of ruining him, the internet makes him an overnight star as people praise his skillful fighting moves. Because of one fight, four strangers suddenly become entangled in more ways than one.
Hibiki and Asumu are on their way to a Makamou attack on the beach. Once they arrive there, they see dozens of people running from the massive Orochi, a beast rumored to be the strongest Makamou ever created. Once they arrive, Hibiki walks towards the Orochi and transforms, but all of his attacks prove useless against Orochi. The situation is made even more dire when Hibiki jumps in the way of an attack meant for Asumu. Taking the full force of the attack, Hibiki passes out as the Orochi swims away, leaving a panicking Asumu to get help. Hibiki ends up in the hospital and Asumu begins blaming himself for Hibiki's injuries. Feeling useless, he begins helping at Tachibana's, going through dozens of books to try and discover a way to defeat the Orochi. Upon coming across a book with his name on it, Asumu sits down and begins to read what turns out to be the history of Takeshi, the Oni and the Makamou war.
Shouichi encounters a teenage girl called Sayaka, who ran away from a military facility because of an attack by the Ant Lords. Sayaka has a supernatural ability to foresee the future. Risa Fukami, of the military group GA, wants to use that power to enhance the newly-made G4 System, which was based upon designs stolen from Ozawa. Now, Agito and Gills must fight to stop the Ant Lords' attack, as G3 and G4 settle their score. The events of the movie happen between episodes 41 and 42.
Godzilla is back, this time under the helm of Gamera Director Shusuke Kaneko. In Kaneko’s vision of the gray leviathan Godzilla returns to Japan to seek vengeance on a modern Japan that has forgotten the horrors of his first attack back in 1954. In order to protect Japan three Guardian sprits arise to do battle with Godzilla placing the fate of Japan in the outcome of this titanic clash.