Alicante, year 1939. In the last moments of the Civil War, the Air Raid Shelters became the safest place to save the lives of thousands of people during the bombings. They sheltered fear, but also the story of many people like Maria, a young dreamer, eager to show the world that love can overcome anything. That it doesn't matter if a thousand bombs fall, as long as love exists, there is hope. A hope that she imagines with Carmen, a young woman from the Santa Cruz neighborhood, daughter of fishermen, with whom she maintains a close relationship. A secret relationship, full of clandestine meetings in the shelters.

In the 1990s, Rafa and Álvaro are quietly in love, forced to keep their relationship hidden from those around them. As they navigate the pressures of secrecy and societal judgment, a seemingly small mistake—Álvaro leaving behind a pair of socks—leads Rafa’s grandmother to uncover their connection. Her discovery triggers a series of events that unravel long-held family secrets and reveal unexpected truths about the past Rafa and Álvaro thought they understood.