Set in Barcelona, Look What You've Done tells the real story of Berto, a well-known Spanish comedian, when he becomes the terrified father of Lucas, with Sandra, his partner. Together, they go through the initial puzzlement and panic, the pregnancy, the visits to the doctor, the preparations and the labor, the breast pumps, baby bottles and the first diaper changes. While trying to combine their work with looking after the baby, also trying to preserve some friends in the process, they witness how their families invade their lives and how everyone challenges every single decision they make. Their relationship as a couple totters. Only together will they manage to overcome the difficulties and to rediscover their former selves, the couple they were before Lucas' birth.
It looks like the end of the world, but it's just the beginning.