Voir Professor Balthazar, Season 2 - Episode 3

Balthazar-City is occupied by a gang of merciless robbers who maltreat its citizens: throw cakes to their faces, saw legs of their chairs and similar. Professor Balthazar invents the “Syrup of Kindness” When robber inadvertently ate it, they turn into exemplary kind people and their leader becomes the main benefactor of Balthazar-City.