Rubius in search of the sphere traveling through the Game Worlds, to save Sakura, the girl he has just fallen in love with, from the claws of the enigmatic and evil Trollmask, in order to get rid of the virtual world of games where they are all trapped. For this, Rubius will be helped by a group of unconditional friends he will meet during his adventures through the Games World: C4T0, his loyal virtual assistant, Zombirella, an enthusiastic zombie who is deeply in love with Rubius, and Slimmer, a being without a face, the embodiment of all the fears of the night, but who in fact is shy and extremely polite.