Zequi was a bank robber who has been released. Now he seeks to recover the stolen money that his accomplice buried somewhere. Everything is complicated when it turns out that the booty is hidden in the courtyard of an institute. In order to get what he has lost he pretends to be a substitute teacher in a school where no teacher can take much. But the exconvict is determined to put order and teach some education to these teenage and rebellious students.