საფრანგეთის საიდუმლო დაზვერვის სამსახურის თანამშრომლები, ბრისო და ნადეჟი, იღებენ დავალებას, ამჯერად ლიბანში. ამ დავალების შემდეგ, ნადეჟს განზრახული აქვს სამსახურის დატოვება, რათა პირად ცხოვრებას მიხედოს. მაგრამ მოულოდნელად ფრანგი აგენტები აღმოაჩენენ, რომ მათ უთვალთვალებენ.

Málaga, southern Spain. Seven men, divided into four cars, set off with a large drug shipment towards Creil, a city near Paris; a routine mission that will be complicated by a fatal sequence of events.

A Parisian criminal gang fall apart after challenges to the gang's leader lessen his influence.

In Montreal, the unemployed fashion designer Sophie Malaterre is shown a website, switch.com, where it is possible to switch houses with a stranger for vacation. Sophie seeks an apartment in Paris nearby the Eiffel Tower that belongs to Bénédicte Serteaux and they change apartments. Sophie arrives in Paris on Saturday morning. The next morning, policemen break in the apartment and arrest Sophie while she is having a bath. Detective Damien Forgeat interrogates Sophie believing that she is Bénédicte and she learns that a beheaded body was found in her room and all evidence of her life has been deleted.