The World of Ultraman Gaia Ultraman Gaia takes place.
is the universe whereAbout 500 years ago[]
- Kijuro Mato predicts the attacks of the Radical Destruction Bringer.
1996-1997[]
- Alchemy Stars student Hiroya Fujimiya creates the CRISIS computer to predict Earth's future disasters, to over come the Radical Destruction Bringer.
- CRISIS predicts that mankind will be the cause of the Earth's destruction, causing Hiroya, to shelter himself and try and contact the will of the Earth.
- Hiroya Fujimiya makes contact with the light of the Sea, beginning his downward spiral towards humanity.
2000-2002[]
- Gamu Takayama makes contact with the spirit of Ultraman.
- C.O.V. lands on Earth, fulfilling Kijuro Mato's predictions. First mobilization of XIG.
- Zoruim appears, wormhole caused by the clash power of both Ultramen.
- Ultraman Gaia fought many monsters during the series' run.
- Radical Destruction Bringer's most powerful minion, Zog, sends their first agent as a decoy to destroy Ultraman.
- Zog's ally, Deathbringer, launches the first phase of the Radical Destruction Bringer's Earth destruction plan by sending Mokian to destroy XIG's Aerial Base.
- Second phase attack by covering the Earth with Dobishi to weaken the Earth guardians.
- Final phase attack happens when Zog herself appears and defeats both Ultramen. Earth Kaiju unite to fight Dobishi swarm and help XIG revive Gaia and Agul.
- Zog defeated and the end of the invasion. Earth regains peace.
2003[]
- The events of Ultraman Gaia: Gaia Again take place.
2017[]
- Gamu and Fujimiya travel to The World of Planet Kanon to help Ultraman Orb and return sometime later.