Audience favourite and heartbreaker at the 2023 Sundance Festival. The sixth-graders at the primary school in Matamoros are astonished when their new teacher Sergio Juarez begins his first lesson. They are considered the lowest-performing pupils in Mexico and their world is characterised by violence, neglect and corruption. An atmosphere of harshness and discipline prevails in the classroom. But Sergio chooses a different way to help the pupils out of the dead end of hopelessness: He turns to the class with freedom and empathy to unleash their curiosity, their potential and perhaps even their genius. However, Sergios' unconventional curriculum is not only met with surprised and puzzled faces from the children, but also with little acceptance and support in the staff room...