Momo and Okarun arguing about whether ghosts or aliens are real, then immediately having to fight both, is the entire show's DNA. The animation doesn't just move fast, it moves with joy, every frame designed to make you feel the exact energy the characters feel. This is a series that knows spectacle isn't a substitute for genuine chemistry between two people who drive each other insane, and it never stops moving long enough for you to care that the plot barely exists.

Momo dismisses aliens as fantasy while Okarun insists ghosts are pure fiction. When an argument breaks out between the high school classmates, they decide to prove each other wrong: each will venture into a location tied to what the other believes in. Momo heads to an abandoned hospital where a UFO has been sighted, and Okarun goes to a tunnel said to be haunted. Neither expects what actually waits for them. Momo, who comes from a family of spirit mediums, awakens a hidden power, while Okarun gains the power of a curse. As they face supernatural battles and bizarre encounters with urban legends and paranormal beings, their partnership grows into an intimate friendship that may be turning into romance.