Violent weather awakes all the world's monsters at once.

Go becomes overconfident after gaining the power of Ultraman and disobeys the captain's orders, ultimately leading to the escape of Takkong.

Go heard a monster's roar during a patrol over Mt. Kirifuki, but the roar could only be heard by Go because of his extrasensory hearing; Ueno, who was riding with Go, did not hear the sound.

Ancient monster Kingsaurus III appeared near the nuclear power plant; the only way to defeat Kingsaurus III is to acquire a kick that could jump over the barrier made by the monster.

An underground monster Gudon appeared in a quarry; Ancient Monster Twintail came out of the rock-like object, bringing panic to Tokyo's Shinjuku; Go transforms into Ultraman to fight Twintail.

Ultraman lost against the two giant monsters; Commander Kishida decides to use Spiner, a weapon with the power of a mini hydrogen bomb, but Captain Kato strongly fights against the idea because if Sniper is used, Tokyo will be destroyed.