Leo (Magimel), a young, ambitious attorney, is approached by Paul Vanoni (Melki), a dubious businessman, to engage Leo’s services. First reluctant and troubled by Vanoni’s past, Leo eventually accepts. Passionate and gifted in his work, he achieves success in working for Vanoni. However, Leo soon forgets rule number one - never befriend your client. As he becomes more involved with Vanoni, Leo must face the facts of his client’s affairs: illegal dumpin of toxic waste, murder, missing witnesses. It becomes obvious that the police have their eye on Leo - what he knows can be dangerous. The time for him to choose has arrived.