When seventeen-year-old Luna Reyes accidentally heals her grandmother's broken wrist with a simple hum, her quiet life in Santa Fe shatters like a discordant note.

Thrust into the hidden world of Echo Makers—teens who can manipulate reality through sound and music—Luna discovers she's inherited more than just her late mother's musical gifts. She's humanity's last hope against the Silence, an ancient force that devours all sound and seeks to drain the music from the world forever.

At Resonance Academy, a secret school hidden in the heart of Nashville, Luna struggles to master abilities that seem to have a dangerous mind of their own. Between navigating friendships, a fierce rivalry with the academy's golden girl Aria Sterling, and her growing feelings for the mysteriously talented Kai Chen, Luna barely has time to process the truth: her mother died seventeen years ago containing a massive Silence outbreak, and the barriers protecting the world are failing.

But some secrets run deeper than others. When Luna discovers that someone at the academy is feeding information to the enemy—and that Kai's dark past might be connected to her mother's death—she faces an impossible choice. Trust her heart, or save the world.

As the final barrier crumbles and the Silence prepares to consume all sound forever, Luna must decide whether to play it safe or embrace the symphony of power that could either destroy her or transform her into the most powerful Echo Maker in history.