The kingdom that drifts above overhead, that makes use of cost-free doodles as a power source, "Rakuga Kingdom." However, currently when faced with an absence in power, they are on the edge of ruin. In order to force the development of doodles, the kingdom's army begins its assault on Kasukabe externally! At the same time, as the drawings start to relocate, the hero that is bestowed the covert treasure of the kingdom, the "Miracle Crayon"-- is none apart from the "extremely carefree 5-year-old," Nohara Shinnosuke !! With Each Other as the "Virtually 4 Heroes," Shinnosuke as well as the attracted doodles try to repossess Kasukabe! Amongst that, they uncover the weak point of the doodles, where they dissolve upon contact with water! To make matters worse, a raincloud that looks to start putting anytime hovers over ... What awaits their experience with the doodles and completion of their experience-- will certainly it be smiles, or rips!?