And far beneath the waves, something ancient and patient stirred, waiting for the girl with the sky-colored stone to come home.

Lily never quite believed in magic. She believed in facts: her small apartment in Providence, the stack of scholarship applications on her desk, the part-time job at the diner that smelled of burnt coffee and frying bacon. But the stone—she carried it always, a smooth worry bead in her pocket.

“Okay,” she said to the horizon. “Show me.”

"You are not from nowhere, Lily Larimar. Your blood is half-tide. The sea gave you this stone. And on your eighteenth year, the sea asks for you back."

Lily stared at the rolling waves. The rational part of her brain—the part that aced chemistry and balanced ledgers—told her to walk away. But the stone pulsed gently in her hand, and she felt the pull of a story older than any textbook.