Kaede and her fairy companion Milmo run into Tacos, an odd octopus-shaped robot who is neither human nor fairy. He has been hunting across the human and fairy worlds for seven scattered crystals and claims that gathering all of them will grant any wish. The pair dismiss the idea at first, but his persistence wins out and they agree to help. In return, Tacos turns Kaede's fairy call into a fairy call crystal, which can sense the crystals and lets them cast combined session magic. Questions remain about what Tacos is really after and what the crystals truly do. The series mixes fantasy adventure, comedy, romance and magical girl elements.