Momo believes in ghosts. Okarun believes in aliens. To make each other believe in what the other denies, they respectively head to a spot famous for UFO sightings and a paranormal hotspot.

Momo’s psychic powers awaken, while Okarun is cursed by Turbo Granny. They try to take refuge at Momo’s house, but a giant alien appears before them.

Okarun is saved from a tough spot by Momo’s grandmother Seiko. Okarun must now play tag with Turbo Granny to lift his curse.

Momo and Okarun succeed in capturing Turbo Granny in their game of tag. However, a location-bound spirit in the shape of a crab comes after them.

Victorious against Turbo Granny, Momo and Okarun can go back to their peaceful lives, but for some reason Okarun’s “thingie” hasn’t returned…

Their classmate Aira had one of the missing golden balls. Aira can now see “invisible things” – perhaps an effect of the ball?

Momo and Okarun manage to pull Acrobatic Silky away from Aira. However, Aira has already passed away…

The battle against Acrobatic Silky is over, and the three briefly go back to normal school life before Serpoians show up again.

Aira has awakened Acrobatic Silky’s powers within her. She joins the battle against the aliens together with Momo and Okarun.

Momo, Okarun, and Aira make it through the aliens’ assault by combining their powers. However, one of the aliens that was supposedly defeated appears before them…

Momo’s childhood friend Jiji begins living in Momo’s house. Jiji, plagued by apparitions in the house he moved into, has come to seek help from Seiko.

Momo and Okarun head to Jiji’s house to investigate what happened to Jiji’s family. There are several figures watching them…

As Momo fends off an attack in the outdoor hot spring, Okarun and Jiji panic over how to handle the mysterious room. Just then, the doorbell rings.

In a bid to free Okarun and Momo from the Mongolian Death Worm’s psychic power, Jiji attempts to carry them to safety but runs into a powerful entity.

Unwilling to leave Jiji behind, Okarun helps Momo escape to the surface. Momo then begins forming a plan to expose the Death Worm to sunlight.

Momo tries to stop the magma, but the Kito family gets in her way. The tsuchinoko shrine priest joins the fray — but so does the possessed Jiji.

With everyone safely back at Seiko’s house, Momo and the others discover that water has a surprising effect on how Evil Eye possesses Jiji’s body.

The hayashi musicians arrive and begin an energetic exorcism performance. But just when the ritual is about to succeed, Jiji makes a surprising plea.

Okarun has an awkward time at the maid café where Momo works. Seiko tries teaching Jiji how to suppress Evil Eye’s possession of his body.

Aira and Okarun battle the classical composer spirits. As Okarun struggles to avoid their attacks, Turbo Granny orders him to feel the rhythm.

Putting his training to the test, Okarun goes all-out and holds his own against Evil Eye, but the effort causes him to revert to his human form.

Momo goes to Okarun’s classroom to tell him about the golden ball spotted in the housing complex and finds him speaking with a curious classmate.

The sky darkens as Momo, Okarun, and Kinta try to evade the giant space monster. They soon run into Aira and Jiji, who give them some much-needed help.

As Momo and the others try to pilot the giant Buddha robot and battle the kaiju, Okarun and Jiji are ejected from the robot and land in a rice paddy.