On the moon, there is an advance civilization of bunny people who used to be identical to humans, but after incorporating themselves with bunny genes, transformed into docile creatures. The result is a society where AI are entrusted with all choices, from the content of meals to how each minute of leisure time should be spent. Amongst this society is a bunny girl named Uko who dislikes this lifestyle, complaining "Let me choose for myself!!". One day, Uko decides to flee the moon and head to Earth where she meets Hane, a bunny girl investigating life on Earth. On this planet with many strange customs, these two will...!?