They descended into the Undercroft, where the city’s pipes groaned like sleeping giants. The air smelled of salt and rust. And there—etched into the wet limestone wall—were words in Luna’s handwriting:
They climbed out of the City of Echoes as the sun rose over the caldera rim. Luna didn't speak much on the way back. She didn't need to. The search was over. Searching for- Luna By Abby And Ricky in-
And that was the problem. Luna had always been a seeker. As children, she'd search for coins in couch cushions, lost constellations in the sky, or the "perfect wave" that she swore existed just beyond the breaker line. But this time, the object of her search was invisible: a low-frequency hum only she could hear, a thrumming she claimed came from the core of the city itself. They descended into the Undercroft, where the city’s
Abby held the tattered sketch she’d made of her younger sister—charcoal smudged where Luna’s smile used to be. "She wouldn't just leave," Abby whispered, her voice swallowed by the damp, salty wind of the City of Echoes. Luna didn't speak much on the way back
"Follow the echo," Ricky said.