The First Siza is a documentary about the Four Houses—Álvaro Siza’s first built work, designed while he was still a student—and the impact of architecture on people’s lives. Centred around the reunion—60 years later—between the architect and Fernando Neto, his first client and the owner of one of the houses in Matosinhos, the film reveals how this project became a turning point in Siza’s career.