In the bustling streets of New York City, a slick and arrogant publicist named Stu Shepard finds himself in a menacing game of survival. Stu, known for bending the truth to get what he wants, frequently uses a public phone booth to discreetly communicate with his clients and a woman he's attempting to seduce, avoiding leaving a trace on his cell phone bill for his wife to find. One day, after making one of his routine calls, he is about to leave the booth when the phone rings. Compelled by curiosity, Stu answers, and this decision marks the beginning of an intense and life-changing ordeal.

On the other end of the line is a sniper, who immediately demonstrates his seriousness and control over Stu by providing him with specific personal information and proving he is under his watchful eye through a high-powered rifle. The caller then lays down a set of rules: if Stu hangs up or fails to obey his commands, he will be killed. As the situation escalates, the police arrive, drawn by the spectacle and reports of Stu's seemingly erratic behavior, complicating the scenario even further. Stu is forced into a corner, trapped physically in the booth and metaphorically by his own web of lies and deceit, as he tries to navigate the caller's sadistic game and save his own life while the whole city watches.