Oops! Mysterious Sounds

A second-hand pair of earphones connects two rivals to the world of the dead. When their idol friend dies under mysterious circumstances, what starts as enemies forced to "fake date" turns into an undeniable bond as they become reluctant partners in a murder investigation. Before the killer... silences them as the next victims. The deeper they dig, the closer they get to death-and to each other. Until they can no longer tell which one is louder: the "voice of the dead" or the "sound of their racing hearts".