Noelia lives in a suburb of Barcelona with no free time: at night she works at a gas station, during the day she distributes advertisements in doorways. She is not yet thirty years old and has no friends. She never says goodbye to anyone, she leaves no clues or traces. Noelia is just one more among thousands of young people who survive in a big city: with her small conflicts and illusions, in her daily struggle to survive. Around her are Rosa, Lucas, Nico and the boss. All with their small conflicts, their small illusions, struggling to live day by day. La línea recta is an urban story in which the protagonist, Noelia, behaves like the city she lives in, she grows and moves forward in an imaginary straight line that takes her from one job to another, from one house to another, without a fixed direction, without stopping, without resting, without knowing where she is going.