Get ready to plunge into a creepy and disturbing story. Student Stas Platov has been mortally afraid of water since childhood - in it he hears a call. He does not remember how this phobia appeared, but one day he has a chance to get rid of his peculiarity. You just need to listen to the audio recording on an old tape recorder. This tape recorder was brought to Stas by a girl named Polina: mute and... dead. Polina disappeared without a trace thirty years ago, but now she wants to find her killer. Stas' life hangs by a thread. And not only him - the lives of everyone involved in the disappearance of a mute girl. After all, every day her unique voice becomes louder and scarier... A voice that only Stas can hear. Revenge, friendship, murder, mysterious visions and a lake that keeps many secrets .