西曆2050年，人類遭受突如其來的「伊爾塔」星人奇襲，並占領了地球人移民所移居的木星衛星「伊歐」，企圖要奪取有如數十倍原子彈的神秘「特里尼能源」。健雄、鐵成、大龍3人為了保衛鄉土與能源，而駕上「巨神西格瑪」開啟了邁向伊歐的收復之旅。
Director
Storyboard (ep 32), Episode Director
Art Director
Music
Script (eps 15, 20-21, 23, 27, 29, 34, 37, 41, 44, 46, 49-)
Storyboard (ep 12), Episode Director (eps 3, 6, 12)
Theme Song Performance (OP & ED)
Script (eps 3, 6, 10, 12, 16)
Theme Song Performance
Character Design, Animation Director (ep 1)
Original Character Design
Storyboard (ep 8)
Storyboard (eps 15, 23, 29, 37, 44), Episode Director (eps 15, 23, 29, 37, 44)
Theme Song Performance (OP & ED)
Animation Director (ep 20), Key Animation
Storyboard (eps 35, 41, 47), Episode Director (eps 35, 41, 47)
1980年 季度排名 #1
1980年 動畫總排名 #31