Killerhertz is a horror-thriller movie that follows Casey, a young woman who is excited about her boyfriend's latest creation. Her boyfriend, Jake, has created an app called "Killerhertz," which claims to be able to summon up the dead.
Casey is initially skeptical, but as Jake demonstrates the app's capabilities, she becomes intrigued. They try the app out, summoning up the spirit of a girl who died tragically. However, things soon take a dark turn when the app begins to summon up more sinister spirits.
As the spirits become more malevolent, Casey and Jake struggle to contain them. The spirits begin to target their friends and loved ones, causing chaos and havoc wherever they go. Casey realizes that the app is more dangerous than she ever imagined, and must find a way to stop it before it's too late.
As the body count rises and the spirits become more powerful, Casey and Jake must confront their own demons and face the devastating consequences of their actions. Killerhertz is a chilling tale of technology gone wrong and the price of meddling with the dead.