Sara, a reclusive ex-intelligence agent, is thrust back into the world of espionage after her estranged son Giorgio’s mysterious death. Driven by guilt and maternal instinct, she reconnects with her former colleague Teresa and begins unraveling secrets at Giorgio’s workplace, Naples Biochemical. As she investigates, Sara discovers Giorgio’s affair with Colonel Prati and a tangled web of betrayal, jealousy, and revenge that ultimately leads to shocking violence.