A nerd must fight powerful spirits and aliens all vying for the secret power of his family jewel so who better to fight alongside him than his high school crush and a spirit granny Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they ll believe in and what they won t Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they ll have to participate in to believe A seemingly unbeatable kaiju is on the attack Okarun hits on the idea of revisualizing the nanoskin that repaired Momo s house into a form they can use to fight back but he lacks the imagination needed so it s Kinta Sakata a k a Erosuke to the rescue The nerd uses his vast knowledge of sci fi to transform Momo s house into a giant Buddha robot