At the turn of the 20th century, tensions in Europe are rising. After the death of her son Norman John, Margaret, a young woman trapped in a violent marriage, flees to Europe with her young daughter Nonn.
Margaret works to make ends meet and return to Nonn. An opportunity to move in with a family and become a horse trainer finds Nonn tangled in a web of temptation and betrayal.
In an effort to restore her reputation, Margaret has an arranged marriage with Astruc. In Paris, she runs a flower shop - but a world of danger and darkness lies beneath the veneer of happiness.
Margaret is now Mata Hari, a superstar performing artist in a torrid affair with the powerful Castello. When she meets prestigious art patron Sergey, Mata Hari finds herself at another crossroads.