《Voice》 is a thrilling crime drama that follows Kang Kwon Joo, the fearless and gifted voice profiler at an emergency call center. When her father is brutally murdered, she joins forces with Detective Moo Jin Hyuk, who lost his wife because of a serial killer. Together, they form the golden duo to solve cases by using their incomparable skills: Kang Kwon Joo's ability to hear even the faintest noises through phone calls and detective Moo Jin Hyuk's perseverance in catching criminals. As they delve deeper into each case, they uncover a web of dark secrets that put their lives in danger.