Hijitus is a street kid who lives in a sanitary pipe in the city of Trulalá (the "cannitus"). His friends are Pichichus (his dog) and Oaky (spoiled son of the richest and most powerful man in town, Gold Silver). Trulalá is ravaged by the evil Professor Neurus, against whom the law, embodied by the "Council of Elders" and the figure of the local Commissar, is manifestly impotent. Hijitus's "amiguitus" group is also composed of Larguirucho, a naughty and naive young man who shares his time between participating in the evil plans of Neurus, play with Oaky and ask for help to Hijitus, without becoming aware of good and evil . To fight evil and especially defend his friends, Hijitus becomes Super Hijitus, an indestructible superhero with incredible abilities, thanks to the power granted by his "Magic Sombreritus". The dream of Professor Neurus is to seize the wonderful hat, and through this, to control Trulala, and Hijitus will always be willing to prevent it.
