Season 1
Gamu Takayama is a 20 year old member of an organization called Alchemy Stars. After a monster known as C.O.V. attacked the Earth, Gamu falls through a portal of light and meets the giant: Ultraman Gaia, who gives him his powers. Later, when Gaia was in trouble in episode three, another Ultraman, Ultraman Agul appeared. Can they save the Earth? Who is Agul, is he friend or foe? Later in the series it is seen that Agul, too, is a being of justice, but only protects the Earth, not humanity. The conflict between the two later leads to a duel, opening a wormhole that allows a giant beast to reach Earth. What will happen then?
01. Seize the Light!
After Gamu Takayama briefly encounters the mysterious glowing red giant During some virtual reality experiments. The Root of Destruction begins its first wave of attacks on Earth.
02. A Hero Appears
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03. His Name is Gaia
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04. Gamu of the Sky
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05. Another Giant
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06. The Ridiculing Eye
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07. The Cleansing of the Earth
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08. The 4,600 Million Years-Old Ghost
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09. Seagull Takes Off
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10. Rock Fight
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11. Dragon Capital
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12. Monster Encircling Net
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13. Night of the Marionettes
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14. The Challenge from the Anti-Space
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15. When the Rain Stops
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16. Birth of Agul
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17. Shadow of Space, Light of Earth
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18. Agul vs. Gaia
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19. Lilia's Maze
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20. The Fossil of Ruin
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21. The Sea of a Mysterious Light
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22. Wings of a Stone
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23. Gamu Expelled!
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24. The Determination of Agul
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25. Showdown for Tomorrow
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26. Final Resolution
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27. A New Battle
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28. The Advent of the Heatwave
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29. The Distant City: Uqbar
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30. The Demon's Cocoon
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31. The Accursed Eye
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32. The Future Seen Before
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33. Battling the Legend
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34. Crash of Souls!
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35. Ransom for a Monster
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36. The Sky of Reunion
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37. The Fourth Symphony of a Nightmare
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38. Ground-Breaking Tusks
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39. Lake of Sadness
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40. I Want to See Gaia!
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41. Resurrection of Agul
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42. Gamu vs. Gamu
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43. The Silver Eyes of Izak
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44. Attack of the Space Monsters
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45. The Living Planet
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46. The Attack of the Forest
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47. X.I.G. Destroyed!?
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48. Revenge of the Death God
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49. An Angel Descends
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50. The Cry of the Earth
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51. Earth is Ultraman's Home
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