Erika, the princess of the Magic Kingdom has come to Earth in order to find a human girl who looks just like her. That girl turns out to be Himeko Nonohara, a tomboy's tomboy. Erika must give Himeko a magical item she has created in order to prove her worth as a successor to the crown. Himeko must test this item, a hair ribbon that allows her to transform into any other person she sees, to see if it is worthy. The series follows Himeko's adventures and her budding romance with Daichi, the boy who discovers her secret.

Mankind's problems are tempting the moon to move away from the planet Earth, but Kaguya, a superhuman spiritualist, is attempting not to let it go off too far. She comes down to Earth from her home in outer space to help solve the relationship problems of people. Her first assignment involves foiling a perfect murder and a bit of gender-bending as she tries to help Tanaka revive the life of his dream lover and get revenge on the killer, which was her ex-girlfriend. The second assignment involves pulling a sexually frustrated teenager's spirit out of a video game after the stress of being dumped forced it outside the body.