Marilou and Philippe prepare for their future retirement in Portugal. But their daughter separates and a whole procession of solicitations falls on them.

While visiting her daughter who is studying abroad in France, Claire is thrown into the midst of a city-wide attack. In a place where she doesn't speak the language or know her way around, she's forced to navigate this French metropolis in the dark of night in a desperate search to find her daughter and ensure her safety.