The art teacher Jobert takes a vocational test for all the children in the school, that is, a generic test with several questions that determines what profession the children will pursue in the future. Oswaldo takes the test and takes "teacher" as a vocation. Of course, in Oswaldo's mind, this immediately turned him into a trained teacher. He goes to the principal, Marilua, and she, as an educator who believes a lot in “hippies” and unconventional methods of education, believes that it can be an interesting experience for the students. So Oswaldo spends a day teaching his own class, to Leia's displeasure. He recites comics in literature class, covers the blackboard with equations invented in math class, he skips chemistry class because "no one will ever know what chemistry is". Until he notices how sad all his colleagues are. And that's not his fault, it's just that nobody liked the result of the vocational test.