Noelia is about to turn 30. She lives on the outskirts of Barcelona and works nights in a gas station. During the day, she distributes junk mail. She has no free time. She finally quits her night job and leaves the house she shares with Rosa. She doesn’t say goodbye to anyone and leaves no trace as to her whereabouts. She works hard all day, has no friends and doesn’t look for any. She seems anonymous, just one more young woman in any big city surrounded by people like Lucas, Nico, Rosa, the boss, who all have their little conflicts, their little hopes, their little daily struggle to survive. The straight line is an urban story about a young woman, Noelia, who behaves as the same city where she lives in, growing and moving forward in an imaginary straight line that takes her from a work to another, from a house to another, wandering aimlessly without stopping, without a break and without knowing where she is going to.