Paris, 1810. Helena lives a double life: a respectable lady by day, and by night, 'Silke,' the anonymous genius whose codes guide Napoleon's armies. Captain Jean-Luc relies on Silke's brilliance but despises the secrecy. He finds himself drawn to the captivating Helena in society, never suspecting she is the phantom coder he seeks. When a vital message is compromised, their worlds collide.