A medical experiment goes terribly wrong in this sci-fi thriller starring Costas Mandylor, Lucy Jenner, John de Lancie and George Takei. During a clinical trial aimed at restoring hearing to the deaf, all the patients become violently psychotic and commit suicide, except Liza Raines (Jenner), who develops supernormal hearing. Next thing you know, a shadowy government security agency recruits Liza for undercover work -- but it may get her snuffed.