高善英(秀愛飾)是一名電台主播，主持一檔在深夜2點直播的電影原聲音樂節目，擁有不少忠實的聽眾。然而由於女兒需要到國外接受手術，善英即將告別這個主持了7年的節目。在她最後一次主持的直播過程中，善英接到一名男子韓東洙(劉智泰飾)打進的電話，稱自己綁架了善英一家。善英一開始將其當作觀眾的惡意電話，但在看到綁架的視頻訊息之後，她意識到了問題的嚴重性。男子威脅善英按照他的一系列指示繼續主持節目，並且不許報警，否則她的家人將有危險。接下來2個小時的節目中，善英該如何辦？而綁匪的目的又是什麼？

Sun-young are a popular radio DJ with a big fan base for a cinema music midnight program that is aired live. She is a perfectionist who has built a successful career for the past 7 years, but when her daughter is in need of an operation overseas, she decides to quit. She prepares for her final show from song selections and comments down to the smallest details. During the show, she receives a call from a listener named Dong-soo. He tells her that she must follow his orders while she hosts her live radio show, or her family’s lives are at stake, and threatens that she can’t tell anyone. Without knowing what he wants and why this is happening to her, she continues her 2 hour radio program to save her family as they get killed one by one.