In the rifts of space-time where parallel universes intertwine, there exists a mysterious dimension known as the Realm of Light. Made up of the light energy of Ultramen from generations past, it is gradually collapsing under the effects of cosmic corrosion. Ultraman Tiga’s light particles accidentally transmigrate to Earth in 2025 and merge with the consciousness of a human boy named Da Gu, setting a cross-dimensional mission in motion.
