Xem hoạt hình miễn phí Masking Threshold Official Trailer

Frustrated by a constant ringing in his ears, a paranoid data analyst documents his obsessive attempts to cure his own debilitating tinnitus through a series of home experiments conducted in a make-shift lab. But as his research becomes increasingly dark and macabre, a horrifying secret behind his maddening condition is revealed with a potential cure more sinister than he could have ever imagined.