The Screw Kingdom is a land where humans and VocaBots live in symbiosis, united by the screws they hold dear. Prince Nejiru is given a Screw Soul on his birthday, which leads him to his very own VocaBot, who awakens with a huge fart! Nejiru and his new bot, Heybot, then return to the kingdom to challenge his father to a VocaBattle for the throne!

Driven out of the castle, Nejiru and Heybot head out into town to collect VocaScrews, where they are confronted by the three down-on-their-luck VocaReemans. The VocaReemans want Heybot's Bungle-Bungle Screw to complete their comedy act and escape their hum-drum jobs. Who will win this latest VocaBattle?!