26 episodes, 11 minutes. Mati’s everyday life radically changes after meeting Rocco, a giant, unbearable but touching, underground creature. The monster´s irruption triggers great adventures for both characters and the beginning of an inseparable friendship. Each of the 26 episodes presents a new adventure for Mati and Rocco that is solved at the end of it. In this way, new characters and locations are gradually introduced, thus describing Mati’s and other characters’ universe.