Veronica, recently divorced with a son, begins to organize her life and adapt to the new situation. Her problems are soon relegated to the back ground when Carlos, her masseuse, is murdered. Knowing himself in danger, Carlos left a final message on her answering machine: she had to retrieve a package hidden in a railway station toilet. From that moment, Veronica will not know peace.

In the middle of the first world war, Barcelona is the center of multiple operations related to war, although Spain is a neutral country.