is a Japanese tokusatsu television miniseries produced by Tsuburaya Productions that was aired during the final segment of the Ultraman Retsuden programming block on TV Tokyo. The series was made and released following the success of the 2012 Ultra Series movie, Ultraman Saga, and is a tribute to the low-budget series, Ultra Fight. The miniseries is divided into two seasons, , which consists of 8 episodes from August 1 to September 9, 2012, and , which consists of 15 episodes from December 12, 2012 to March 27, 2013. A DVD release of this miniseries was sold online on June 21, 2013, under the label .

Story

A New Power

Four monsters: Bemular, Talesdon, Sadola, and Gudon are mysteriously revived at the Monster Graveyard. Ultraman Zero eliminates them and then meets their master, Alien Bat Glacier, who introduces his monster army, the Four Beast Warriors of Hell. Zero tries to attack, however, Glacier quickly traps him inside the Techtor Gear Hatred, armor which was created from the grudges of deceased monsters. Zero then suffers a one-sided defeat by Ex Red King. Pigmon, a small monster who Glacier accidentally revived, watches the battle from a safe distance. Ex Red King notices Pigmon and tries to eliminate him, but Zero absorbs the attack and uses his StrongCorona Zero form to escape before killing the monster.

Ultra Zero Fight

Later, Zero and Pigmon find themselves trapped in a pocket dimension. While trying to escape, Zero recalls his reason for arriving at the Monster Graveyard, and tries to understand why Ultraman Dyna's and Cosmos's powers remained inside him after their last battle together. Suddenly, Glacier appears and brings Zero his next opponent: two clones of his alternate forms. He quickly realizes that his opponents are the images of his fear (and powers), and he faces them, defeating the true enemy, Galberos, and escaping from the pocket dimension. Once he is free, Glacier releases two monsters, Gan-Q and Bemstar. As they fight Zero through the use of a wormhole connection, Zero assumes his second alternate form, LunaMiracle Zero, and kills them in one swoop.

Ultra Zero Fight

Once the monsters are defeated, Glacier reveals that the Four Beast Warriors of Hell had achieved their purpose, and he absorbs their resentment in a climactic fight against Zero. In the middle of the battle, he exploits Pigmon by revealing that their life force is connected so that if Glacier dies, Pigmon would also die. Zero is forced to submit to Glacier's torture, however, Pigmon reassures him, which allows Zero to fight back by splitting into his alternate forms. LunaMiracle Zero separates Glacier from the restless monster spirits and saves Pigmon's life, then StrongCorona Zero uses Garnate Buster to defeat Glacier. In the aftermath of the battle, Zero finds the purpose of his new powers and reunites with his comrades.

Ultra Zero Fight

Shining Zero

Five groups of aliens, known as the Darkness Five, discover Zero's capabilities from Glacier. Meanwhile, on a distant world, King Silvergon wreaks havoc on a planet that belonged to the Fanegon. Ultraman Zero interferes and tames it using his LunaMiracle Zero form.

The Mother of Ultra appears and tells Zero that the Ultimate Force Zero have been turned into bronze statues. While investigating, Zero discovers the "Mother of Ultra" is Alien Hipporito Jathar, and that he is also going to be turned into a bronze statue. However, he uses this opportunity and finishes Jathar, saving himself and other victims from petrifaction. Victory is short-lived as another enemy appears in the form of Alien Temperor Villainous and his pet monster, Tyrant. Alien Mefilas Sly takes Pigmon hostage during the battle and attempts to lure Zero to the Monster Graveyard. Alien Groza Glocken and Alien Deathre Deathlog join the fight. Zero is weakened but aided by Ultimate Force Zero, allowing Zero to race to the Monster Graveyard. Zero quickly defeats Sly and frees Pigmon, but the true enemy appears to be Kaiser Darkness, who is actually Ultraman Belial.