Aris, a meticulous museum curator who lost his hearing a decade ago, has found peace in a world of absolute silence. But his quiet life is shattered when he joins a clinical trial for a revolutionary AI-driven hearing aid. The device doesn't just restore his hearing; it bleeds through the fabric of time. Aris begins to pick up "residual frequencies"—ghostly conversations trapped within the museum’s stone walls. Among the static, he hears a voice that should be impossible: his father, whispering about a hidden vault and a betrayal just moments before the "accident" that took his life. As the echoes grow louder, Aris realizes he is being hunted by those who want the past to remain buried. In a race against time, he must use his new "gift" to solve a ten-year-old murder, only to discover that some voices were never meant to be heard.