1970s Italy, amidst the rolling hills of Tuscany and the gritty streets of Naples, where ancient olive trees whisper secrets, and blood is as thick as wine. Billie, a skilled but morally conflicted enforcer for a powerful Naples mafia family, has a reputation for being ruthless. Her life is steeped in violence, and her path is carved by loyalty to a family that saved her as a child but molded her into a weapon. Her latest mission sends her to Tuscany to pressure Diana, the fiery heir of a rival family.

Diana is a reluctant mob princess. She detests her family's criminal empire and secretly funnels resources to the oppressed communities they exploit. Diana is intelligent, resourceful, and bold, but her defiance places her at odds with her father and makes her a target for assassination.

When Billie infiltrates Diana's world, what begins as a mission of intimidation evolves into an unexpected connection. Diana sees through Billie's hardened exterior and finds a kindred spirit hiding beneath. Billie is captivated by Diana's courage and humanity, sparking a forbidden romance that places them both in unimaginable danger.

The night is cold and dark, both Billie and Diana running amongst the roof tops in black.