(Three years later, Mason is seen living happily with his girlfriends. Unbeknownst to him, a certain archenemy of Ultraman Zero has returned, and began to operate his plans behind the scenes.)

(In a building located in Metropolis, a mysterious male figure is pulling out a kaiju capsule and a "Riser" as he prepares to summon the kaiju.)

????: Go and mark Zero's end.

GOMORA!

(Gomora is then summoned, and then he rampages through Metropolis.)

(Back to Mason, he is seen watching a novel with Diana until it gets interrupted by some news.)

Reporter: Breaking news, a giant monster is attacking Metropolis. We don't know where it came from, but it's believed that someone awakened it and it's now destroying everything standing in his way. The question is, where could the Justice League be?

(Mason then goes to his room, and picks his transformation device before jumping out of the window as he transforms into Ultraman Zero and flies towards Metropolis. Diana suits up as Wonder Woman and goes to aid her lover in his mission.)

(Back to Metropolis, Gomora is seen still rampaging until someone kicks him back. It's Ultraman Zero.)

Zero: I am Zero! Ultraman Zero!

(Gomora charges at Zero, and they exchange blows until Zero kicks Gomora back, and then they exchange blows again until Gomora concentrates his energy and fires it at Zero, but Wonder Woman comes in and shields him with her bracelets.)

Zero: Wonder Woman?

(She nods as Zero prepares to fight Gomora again.)

Zero: You're 20,000 years too early to beat me!

(Zero then pulls out his Sluggers and launches them at Gomora, cutting off its arms as he then prepares one of his finishers.)

Zero: Wide Zero Shoot!

(Zero charges his energy using Leo's Space Martial Arts stance before firing an L-style beam at Gomora, destroying it. Zero then flies away along with Wonder Woman as Lois Lane and Jimmy Olsen are seen having watched the entire fight.)

Lois: Did you record everything, Jimmy?

Jimmy: (nods) Yes, ma'am.

(Back to the mysterious man, he clenches his fists.)

????: So you did it, Zero... but don't think this is over. This is only the beginning.

(He laughs maniacally as the screen fades to black.)