Kamen Rider — Season 36, Episode 21

Are countless children dreaming the same dream? Baku, who began investigating, discovers a common thread among the children who shared the same dream. Entering the dream world once more, Baku witnesses the terrifying conclusion of the nightmare unfolding beyond the Mind's Door. The children are in danger! Baku transforms into Zeztz and challenges the Baby Nightmare to a battle, but...!?