Takashi Kamiyama is your typical mild-mannered high school student—polite, aloof, and pacifistic, with a slightly above-average IQ. But would your average high school student really enroll himself at the infamous Cromartie High School, known as a breeding ground for the toughest delinquents out there? Apparently so, as that is exactly what Takashi does, though for reasons he'd rather leave unmentioned. However, one thing is for sure: the "hard-boiled rabbit in a den full of hungry lions" is never going to have another dull day. And how could he, now that he's surrounded by mohawked punks, obnoxious robots, and... gorillas? And was that Freddie Mercury riding a horse down the corridor? Follow Takashi as he earnestly dedicates his new high school life to better his school's reputation while his classmates are hellbent on wreaking havoc.

The alien invader Goa plots to conquer the Earth. He first warns the Murakami family (father Atsushi, mother Tomoko, and son Mamoru) of their invasion, and demonstrates his powers by transporting them to a prehistoric jungle and destroying a Giant Dinosaur before their very eyes. But they will not agree to surrender to Goa, so hope comes in the form of Magma, an armored, golden giant with long hair and antennae. He and his human-sized wife Mol, both created by the wizard Earth are sent to defend our world against Goa. They befriend Atsushi and Mamoru, the latter has Magma emotionally touched, as he wanted to have a child with his wife Mol, so Earth creates a duplicate of Mamoru, named Gam Earth gives Mamoru a whistle, with which he can call Gam Mol and Magma in times of crisis. So when Goa unleashes his various daikaiju, chances are, Magma, Mol, and Gam will fly to the rescue.

In a Kaiju-filled Japan, Kafka Hibino works in monster disposal. After reuniting with his childhood friend Mina Ashiro, a rising star in the anti-Kaiju Defense Force, he decides to pursue his abandoned dream of joining the Force... when he suddenly transforms into the powerful "Kaiju No. 8." With help from his junior colleague Reno Ichikawa, Kafka hides his identity while striving towards his life-long dream of passing the Defense Force exam and standing at Mina's side. But when mysterious intelligent Kaiju attack a Defense Force base, Kafka faces a crucial decision in a desperate situation...

Professional wrestler Genzou Shibata sports the body of a mountain, but beneath his hulking appearance is a man with an extreme affection for animals. Facing off his opponents in the ring as the legendary "Animal Mask," Genzou wins the hearts of crowds everywhere with his iconic tiger persona. During the bout for the title of World Champion against his greatest rival, the Macadamian Ogre, Genzou is suddenly summoned to a fantasy world by a princess. With her kingdom being threatened by a monster infestation, she pleads the wrestler for assistance—to which he answers by knocking her out with a German suplex! Escaping the castle and finding himself stranded in a mysterious land, Genzou decides to begin his career as a beast hunter to capture and befriend creatures far and wide. Joined by the wolf-girl Shigure, the dragon-girl Hanako, and the vampire Carmilla Vanstein, the professional wrestler pursues all kinds of dangerous requests for the sake of fulfilling his dream as a pet shop owner.