A bomb attack takes place at Gare d'Austerlitz in Paris, killing several people a few days before the Presidential elections in France. The police is suspecting an Al-Qaeda satellite-group, the security camera footage is lost. A hacker with an interest in security cameras gets hold of the lost footage. He decides to use his wide access to security cameras all over Paris to track down the culprits. In doing so, he discovers that the plot is bigger than expected.