Former Marine turned New York City doorman Ali (played by Ruby Rose) takes a job at a historic Manhattan apartment building, hoping for a quiet life after her military service. But her peaceful new position is shattered when a crew of ruthless art thieves, led by the cunning and volatile Jean (played by Jean Reno), storms the building during a high-stakes heist. Trapped inside with the wealthy residents and her young niece, Ali's combat training kicks into high gear. Using her intimate knowledge of the building's layout, its hidden passageways, and her resourceful instincts, she transforms from a humble gatekeeper into a one-woman army. As the intruders close in on their prize, Ali must outsmart and outfight them at every turn, turning the opulent lobby and shadowy corridors into a deadly battleground to protect her family and the tenants under her watch. This high-octane action thriller delivers relentless suspense and bone-crunching fight sequences.