Naota is a detached sixth-grader afflicted by the pangs of puberty. When a crazed girl on a motor scooter runs him over and brains him with a bass guitar his life gets weird - giant-fighting-robots-shooting-from-his-skull weird.

Naota’s attacker, Haruko, is now his dad’s live-in housemaid and she says she’s an alien. Mamimi names the robot from Naota’s head Canti, the God of Flame. Does Canti have anything to do with the mysterious fires burning all over town?

The president of Naota’s class, Ninamori, is no stranger to the dirty deeds of politics. She rigs the vote to cast him as the lead role of their class play. But she gets in over her head after a crashing introduction to Haruko.

There’s a guy claiming to know Haruko and why she’s using Naota’s head as a portal for oversized battling robots. It’s too late, though, as a malfunctioning satellite is heading straight for them and it’s up to Naota to stop it!

Jealousy spurs an epic pellet gun battle between Naota and his dad over Haruko. The object of her desire will be revealed, and she’ll do whatever it takes to get him!

A hand statue looms over the Medical Mechanica building, threatening to iron out the city. As Mamimi’s new pet turns out to be a crucial element to Haruko’s plans, Naota finally proves that he’s no pushover.

Hidomi’s Dream – white ash covers the entire ruins, behind which a row of humongous irons comes thundering after Hidomi who is now a zombie.

Hidomi wakes up from yet another dream of her becoming a Zombie. At school, Raharu gives her a handout to bring over to Ide, who didn’t show up to class.

Crazy things happen during Hidomi’s NO activation, and she is now left with a cheerful and happy personality, which is the total opposite of her real self. The only way to bring her back to normal is to destroy the cables of the giant iron.

Marco is the only one that seems to think that happy Hidomi is attractive. While he’s aware that Ide is in love with her, he works part time to buy her a charm. Meanwhile, Jinyu and Raharu scheme to go up to the plant in her Bel Aire.

Having made damage to the plant, the iron now stands up straight. Raharu tells the class that she’s happily married and now pregnant. The only way to become happy is to go to the amusement park (run by Tonkichi).

Trying to get Ide back, Hidomi attacks Raharu physically first then verbally. She tells Raharu that she is acting immature because she knows that she is using Hidomi because Raharu is in love with Atomsk.