The humdrum life of Teresa, a young pharmacist from Ciudad Real who is deeply concerned about caring for her mother with dementia, is about to change forever. One night, just before closing her shop, she is assaulted. The attack awakens fears she believed long forgotten and unknown traumas. Ginés Romero, a highly skilled inspector willing to do whatever it takes, and Nadia Cañizares, a brilliant sub-inspector fallen on hard times, will discover that the search for truth entails dangerous risks and inevitable pain. The fast-paced police investigation will draw Teresa into a terrible family secret hidden for decades.