In a future Japan, a meteorite strike has brought an end to the human race. The helicopter in which she was riding with her family crashes, saving the life of a young girl named Kaina, who is now a one-armed woman and leads a fulfilling life deep in the mountains with her benefactor, a volcano named Aramagi Volcano. One day, however, an encounter with an "arm" brought by a man who visited the volcano greatly distorts and accelerates Kaina's destiny. The raging battle between science fiction and xenobotany in the apocalypse world, presented by Ningen Rokudo and Badger Keigo with all their might, begins!

https://viewer.heros-web.com/episode/4856001361338075853