A 1979 Japanese tokusatsu kaiju film produced by Tsuburaya Productions, consisting of re-edited material from the original television series Ultraman. Ultraman: The Great Decisive Battle was the 1st movie of the third Showa phase (Jissouji's Ultraman being first and Ultra Brothers vs. The Monster Army being second) and because of this Tsuburaya decided to make this a reunion of the last 12 Ultras (aside from Ultraman 80 which hadn't come out yet). Tsuburaya decided to give this a different tone than Jissouji's Ultraman, having more new scenes and appealing to the all-Ultra fan.

Hayata is a member of the Science Patrol, an organization tasked with investigating bizarre anomalies. He is mortally wounded when accidently encountering an alien being from Land of Light, who grants Hayata new life as the two are merged into one. Now, whenever a threat arises that is too great for the Science Patrol to handle, Hayata activates the beta capsule and becomes the hero known as Ultraman.

Keizo Tsujiguchi believes his wife Natsue was having an extramarital affair when their child was kidnapped and killed. He believes of her extramarital affair she was unable to watch over their child properly and blames her for their daughter's death. To exact revenge on his wife, he then adopts the killer's child without telling the truth to his wife or their newly adopted child.

Home drama about tin craftsmen and their families in downtown Tokyo. Though poor, they do not lose their cheerfulness or give in to oppression.