Rei and Mirai soon land on the frozen surface of the Land of Light, and begin to journey to the Plasma Spark Tower to reunite with Ultraman and Ultraseven. Meanwhile after fleeing M78, Ultraman Belial hides in the Monster Graveyard and uses the Giga Battlenizer to resurrect and control 100 Ultra Monsters to fight the Ultra Warriors.
Mirai then asks for Rei's assistance now that Belial has returned, and Rei agrees to help. Ultraman Belial was sealed away in a prison made to hold him, his army was destroyed, and the Giga Battlenizer was sealed away in a Valley of Fire. During Belial's first raid on the Land of Light called the Revolt of Belial, he nearly conquers the planet with an army of monsters until he was confronted by Ultraman King. In the deep recesses of space, he met Alien Reiblood who fused with Belial, transforming him into the evil Ultra he is now and acting as his consciousness. Mirai then explains the story of Ultraman Belial: Before his current state, Belial was tempted into owning the power of the Plasma Spark for himself, but was visibly scarred by its energy and was banished by the Ultra Warriors for endangering the planet. Long ago, the planet and its people were once very much like Earth until its sun went out and thus the planet faced destruction until the Plasma Spark was created, it is revealed that the Plasma Spark acts like an artificial sun for the planet and that it also transformed all of its citizens into the Ultra Warriors. Mirai tells Rei the story of M78 and the Land of Light. Rei is then confronted by Mirai, the human form of Ultraman Mebius. Immediately afterwards, the ZAP SPACY is shocked by the sudden appearance of Ultraman Mebius, who takes Rei and teleports away before the ZAP SPACY can respond. After a short battle using their weapons, Rei sends his Gomora to do battle against the monster and after some assistance by the ZAP SPACY, Zaragas is destroyed. However, their visit is quickly interrupted by the appearance of the monster Zaragas, who appears before them in a meteorite. However, Ultraman and Ultraseven inform Mebius of a helpful source, Rei, a Reionics and the human form of Reimon.Įlsewhere the ZAP SPACY crew, after their battle against Alien Reiblood, have now landed on an Earth-like planet known as "Dent". Meanwhile Ultraman Mebius, who was flung into space during Belial's raid, returns to the Land of Light to see that it has become a frozen wasteland. Ultraman Belial then leaves the Land of Light with the Plasma Spark in hand and heads to the Monster Graveyard as Ultraman Taro saves the last amount of light to keep the planet alive. Without its power, the Land of Light quickly freezes over, as well as all of its denizens (Ultraman and Ultraseven survive by shielding themselves at the last moment). Ultraman Belial is then confronted by all of the citizens of M78, but he easily brushes them all off and continues towards HQ, taking out Ultraman, Seven, Zoffy, Mebius, Jack, Ace, 80, and even both Father of Ultra and Mother of Ultra until finally, he steals the Plasma Spark - the ultimate source of power for the Ultras on the planet. Ultraman Belial is then confronted by a squadron of Ultras led by Ultraman Taro to stop him, but Belial easily shrugs them all off and fights with Taro himself, dragging him down to M78. Alien Zarab declares an alliance with the evil Ultraman, but is quickly killed in cold blood. Meanwhile on a Space Prison, Alien Zarab (disguised as Imitation Ultraman) tricks two guard Ultras and uses the Giga Battlenizer to release the evil Ultraman known as Ultraman Belial.
The three Ultras inform Mebius that "minus energy" has been plaguing several planets in the universe lately, causing monsters across the universe to rampage for unexplained reasons. After a short battle, Ultraman Mebius destroys Bemular and returns to Land of Light in Nebula M78, where he is reunited with Ultraman, Zoffy and Ultraseven.
The red orb reveals itself to be Ultraman Mebius and the two face off. Upon landing on a desert-like moon, the blue orb reveals itself to be the monster, Bemular. The film opens up with a red orb of energy chasing after a blue orb of energy throughout space.