This is a story about Momo, a high school girl who comes from a family of spirit mediums, and her classmate Okarun, an occult fanatic. After Momo rescues Okarun from being bullied, they begin talking. However, an argument ensues between them since Momo believes in ghosts but denies aliens exist, and Okarun believes in aliens but denies ghosts exist. To prove to each other what they believe in is real, Momo goes to an abandoned hospital where a UFO has been spotted and Okarun goes to a tunnel rum