Lilith appears in Gargantua's world but dimension-doors out. A nine-tailed fox spirit opens her own door into Gargantua's world; Gargantua and his troll trio charge through and find themselves in a world of rooms which link to many worlds. Meanwhile Lilith and Hazuki arrive aboard a colonization spaceship where a computer is caring for a whole cohort of children whose parents have all become "immobile" and which is itself failing and malfunctioning. A habitable planet must be found soon for the survival of the children.