A prologue episode that takes place prior to season 3.
The heroes of the Ultra League split up to do all they can to rescue Yullian. On Planet Juran, a dangerous Absolutian vanguard approaches and fight with Ultraman Cosmos. Meanwhile, the Parallel Isotopes Ultraman Belial and Ultraman Tregear are working with Absolute Tartarus in The Kingdom, and they come across the source of the Absolutian’s power. Ultra Heroes vs Absolutians, the destinies of the two forces came to a crossroad!
