The first of a 2-part sequel to the 2006 TV Series Ultraman Mebius. After the death of Alien Empera, the sentient being known as Armored Darkness is activated to carry out the Emperor's Plan B. To make its presence known, Armored Darkness revives the monsters Saramandora, Roberuga, Mukadender, and Cherubim.

While the Subordinate weeped, Mirai informed him that Ryu was alive, saved by the power of Ultraman King. He revealed that after Alien Emperor's defeat, Armored Darkness had been known for some time and Ultraman Hikari was sent by Ultraman King to destroy it before it could reach Earth, but the Armor's strength overpowered him and possessed him.