2013-

The destruction caused by kaiju over the last several decades, especially in Godzilla's recent battle with Rokmutul, causes the United Nations to initiate a complex initiative to deposit all of earth's kaiju on one specific island. Monster island is chosen, as that had a high amount of radiation the kaiju could feed on. Zilla Jr and the Runt were already living on the island, and the Atlantean Godzilla is lured to it by atomic radiation. Mothra is excluded from this due to her previous aid to mankind. Anguirus is also taken to Monster island late in the year.

2014-

The titans are discovered to be alive in the Bering Sea, and are both knocked out and transported to monster island. Gamera is also lured to the island using fire, which he fed on.

2015-

The hole to the hollow earth opened in 1989 is finally closed by G-force.

2017-

All of the alien races that had previously attacked earth form an alliance led by the sunerian queen known as the intergalactic war alliance (Or IWA for short) and begin gathering monsters to form an army against earth. The first monster in their army is a space dragon called MOGU, which Chaos had discovered on a remote planet.

2018-

An agent from the middle eastern country of Saradia steals DNA samples of Godzilla II from a G-force facility and flees. With these cells, the Saradian government asks doctor Genshiro Shiragami to use them to give Saradia fertile farmland. However, the Saradian office is suddenly hit by a terrorist attack, destroying the G-cells and killing Shiragami's daughter Erica. Afterwards, Shiragami goes into isolation.

2019-

The giant walrus kaiju MAGUMA is discovered in the arctic, and G-force quickly knocks it out and transports it to monster island. Shortly after, they discover a hollow earth entry point close to where Maguma had emerged, and theorize that he had emerged from that point. The entry way is quickly closed after a battle with the hollow earth kaiju SHIMIDA.

2021-

IWA discovers Gigan and takes control of him, adding him to their monster group.

2022-

Ebirah is discovered to still be roaming the waters where Letchi Island once was, and is drawn to the waters of Monster Island, which the public had begun referring to as "Monsterland." At this point, Monster island's inhabitants consisted of the Atlantean Godzilla, Gamera, Anguirus, Zilla Jr, the runt (who had been sterilized in 2001 to prevent him from reproducing out of control), the titans, Maguma, and Ebirah.

2023-

G-force locate Doctor Shiragami and ask him to help them work on the G-cells and understand them better, perhaps even discovering a cure to several diseases thanks to it's regenerative properties. However, Shiragami instead splices Erica's cells with Godzilla and a plant he had. This gives birth to the plant monster BIOLLANTE, who begins calling out to Godzilla. Godzilla answers the call, on the way battling and devouring a fish monster named DELUTAILOS. When Godzilla arrives at the human faced Biollante, they fight, and Godzilla wins before returning home.

2024-

IWA discovers King Ghidorah roaming space and takes control of him. Along with that they begin pumping Ghidorah with cosmic energy to power him up.

2025-

In order to defend earth without the aid of the kaiju, G-force build a new Mechagodzilla, nicknamed KIRYU.

2026-

IWA discovers Redmoon roaming space, and using a kaiju communication device, manages to convince him to join them so he can have his revenge on mankind for taking his family from him.

2027-

The spirit of Devil Godzilla possess Anguirus, rampaging across monster island and fusing his soul with Baragon's to create the monster BARAGUIRUS. Atlantean Godzilla fights Baraguirus, and after a long fight, defeats him, ending Devil Godzilla's reign for good.

2029-

IWA attacks the Godzilla planet, swiftly conquering it using Gigan and Mogu, and taking control of the Godzillas, converting them into an army. However, Ririn manages to escape and starts making his way to earth. IWA also begins heading to earth, keen to take control of the monsters on monster island to prevent any resistance.

2030-

IWA takes control of the monsters on monster island and along with their Godzilla army, turn them loose on various cities.

Atlantean Godzilla attacks New York!

Anguirus topples Shanghai!

The Zillas raid Los Angeles!

Maguma smashes Paris!

Ebirah mangles Venice!

The Titans and Gamera topple London!

IWA then contact humanity and reveal themselves to be the ones behind the attack, ordering mankind to surrender and become their colony, or the monsters would destroy them. Humanity refuses, and Kiryu is sent to stop Atlantean Godzilla, as Mothra battles Anguirus in Shanghai. With the aliens distracted, a small UN team manages to discover IWA's mind control device and destroy it. With that done, humanity takes control of the monsters and sends them to smash the alien's base at Mount Fuji. In response, the aliens unleash Mogu, Gigan and Ghidorah, now EMPEROR GHIDORAH. However, Ghidorah overpowers the mind control and destroys IWA, then fighting the earth monsters. Atlantean Godzilla is killed, but Ririn absorbs his radiation and becomes an adult. After Gigan, Mogu and Redmoon are killed by Anguirus, the earth monsters destroy Emperor Ghidorah together. The Godzillas return home afterwards, with Ririn staying on earth.