Bored of her immortal life on Earth, Kaguya Houraisan decides to board the mining ship Red Dwarf in hopes of regaining an interest in life by exploring deep space. But when she exits stasis after a radiation leak wipes out the entire crew, she's left only with her fellow immortal, Fujiwara no Mokou, and an AI version of her mentor, Eirin Yagokoro, to drift together in space forever

Mami Tomoe struggles in Madoka's new world, guided by Kyubey and a mysterious creature.