Newly promoted detective Mike Keegan is assigned to protect Claire Gregory, a wealthy socialite who has witnessed a brutal murder. While staying close to her in an upscale Manhattan apartment, Mike becomes increasingly captivated by Claire's beauty and charm. Claire, meanwhile, is unsettled but comforted by Mike's presence, sparking a complicated emotional connection between them. The distinct worlds of the blue-collar cop and the glamorous socialite create tension and intrigue, further complicating Mike's professional and personal life.

As Mike balances his duties as a detective and his responsibilities as a husband to his wife, Ellie, his commitment is put to the test. The murderer remains at large, heightening the danger surrounding Claire and leading to increasingly precarious situations for both her and Mike. The growing emotional entanglement between Mike and Claire threatens to undermine his marriage and career. While striving to protect Claire from the lurking threat, Mike must also confront his own vulnerabilities and the moral quandaries that arise from his dual commitments.