In Episode 3, Goku, Supreme Kai, and Glorio embark on a mission to the Demon Realm to defeat King Gomah and rescue Dende. They travel in an aircraft from the Demon Realm, powered by magical energy, quickly leaving Earth behind. Glorio informs them that they can only reach the Demon Realm through Warp-sama, a gatekeeper near the planet Batapi in the Rakka System.

When they arrive at Warp-sama, who resembles a giant goldfish, Goku's joking remarks almost prevent them from passing. They must enter a PIN code provided by Glorio, but Supreme Kai fails to relay this crucial information to Kibito. After navigating through Warp-sama, they find themselves at a relay point before entering the Third Demon World, as they lack clearance for the First and Second Demon Worlds.

The Third Demon World is a unique landscape with floating lands and thick air filled with gases emitted by numerous volcanoes. The dense atmosphere makes movement difficult and slows down flying objects. While traversing this realm, the group encounters bandits but avoids conflict, as the heavy air hinders the attackers.

They reach a town where Glorio secures a hotel room for them. Goku and Supreme Kai grow hungry and visit a nearby bar to eat. As they enjoy Demon World Burgers, Goku's round ears attract the attention of local thugs, who mistake him for an outsider. A fight breaks out, which Goku easily wins, using the encounter to adjust to his smaller body and the heavy air.

After the fight, they return to the hotel to rest. However, Glorio discovers that his aircraft has been stolen/destroyed.