
Naofumi Iwatani, an otaku, becomes cursed with the fate of being the "Shield Hero." Armed with only a measly shield, Naofumi is belittled and ridiculed by his fellow heroes and the kingdom's people due to his weak offensive capabilities and lackluster personality. The four heroes are respectively bestowed a sword, spear, bow, and shield to vanquish these Waves. Melromarc is a country plagued by the Waves of Catastrophe that have repeatedly ravaged the land and brought disaster to its citizens for centuries. The Four Cardinal Heroes are a group of ordinary men from modern-day Japan summoned to the kingdom of Melromarc to become its saviors.

The film is not a spinoff, but a story in the official history of Dragon Ball. Kuririn, Piccolo, Vegeta, and other familar characters will appear in the film. Specifically, it is set during the lost decade of story time after the end of the battle with Majin Buu. The film is set between the 517th and 518th installments of Akira Toriyamas original manga. After learning the secret of the Super Saiyan God, an intense battle between Gokuu and Beerus commences, the immense power of which puts the Earth in terrible danger. Having only heard of the Super Saiyan God in legends, Gokuu and his comrades summon Shen Long the Eternal Dragon, who they find out is afraid of Beerus. After discovering that the Saiyan home planet was destroyed, he tracks down the remaining Saiyans on Earth, looking for Gokuu specifically.

With the help of his assistant, Whis, Beerus looks for this powerful being, as he wishes to fight a worthy opponent.

Meanwhile, in space, Beerus the God of Destruction awakens from his long slumber, having dreamed of an entity known as a Super Saiyan God. Following the defeat of a great adversary, Gokuu Son and his friends live peaceful lives on Earth.
