Petra, a 60 year old grandmother, is facing a great challenge, make her rebel granddaughter, Vicky, learn the meaning of respect. Vicky’s conduct at school is just as unrespectful; she’s even more offensive and mocking towards her classmates. To correct Vicky’s conduct, Petra makes an ingenious plan to teach Vicky a lesson on humility.
Three classmates with special powers, Nora, Ester and Carmen, form a secret society dedicated to doing good at school. Their goal: denounce all abuse and illegal acts at school. Along their school’s director (Edna Lisboa), they will defeat the reign of terror of Gilbert, alias “El Macho” and his girlfriend Afrodita, alias “La Potra”, who have a gang in the school that sells drugs.