Leon arrives in Eva's life one morning, on the terrace of a café. The little boy settles down, asks for hot chocolate. The young woman, 35, without children, takes her home, calls social services and learns that Leon has run away from home. Eva has to bring him back but eventually delays the deadline. She who leads an idle existence, sheltered from need, attaches herself to the little boy. Called to order by the authorities, she ignores and tells Leon that they are now on the run. Together, they go to Italy in search of the mother of the little boy ...

This gripping and wrenching thriller tells the story of Ilan Halimi who was kidnapped for ransom in a Paris suburb. His captors, who dub themselves The Gang of Barbarians, operate under the assumption that his Jewish heritage means he is worth a lot of money. Taking the audience through the harrowing experience of the Halimi family and sharing a searing insight into Ilan's vicious ordeal, the story tracks the massive but futile investigation doomed by near-misses and tragedy that triggered a national outcry. For 24 days the police, insistent upon handling the case as a normal for-ransom kidnapping, failed to recognize the anti-Semitic overtones of the abduction. Faithfully reenacting events from the view of the various characters, Tout, tout de suite raises troubling questions about the state of anti-Semitism and race relations in contemporary France.