The World Federation canceled its exploration operations beyond the sky and turned to the underground to exploit the power of the World Tree. However, due to over-exploitation, the world's information was confused. Monsters reflected from the "past" and "future" continued to pour in. People were tired of dealing with these monsters. The almost exhausted earth and the alliance with broken energy made the survival of mankind even more dangerous.
And the girl who lives among the roots of the World Tree is still looking for a way to leave here.
Concept: A sunny and positive children's program