Once filled with fashionable mansions the historic Sentier district of Paris has nowadays fallen on hard times, housing the rag trade alongside sleazy nightclubs. Aimee Leduc finds herself drawn to the area when a woman, newly released from prison, tells her she knew Aimee's long-lost mother. Aimee is shocked to hear that her mother was a member of the notorious 1970s Red Terrorist gang but before she can discover more, her contact is murdered. Desperate to find her mother, Aimee becomes embroiled with resurgent terrorists, no longer motivated by political ideals but ruthlessly seeking hidden loot - which also seems to have disappeared without trace.