Atlantis

When Mia discovers a glowing seashell on Windy Beach, she thinks it's just a strange treasure. She's wrong.

The shell is a key-and it opens a path to Atlantis, a breathtaking underwater kingdom where crystal towers glow with ancient magic and citizens are running out of time.

The Heart of Atlantis is dying. Its magic is fading, and the city-hidden beneath the waves for generations-is slowly going dark. A young queen sends Mia and her brother Leo on an impossible mission: journey into dangerous caverns, solve riddles guarded by creatures of legend, and find the missing piece that could save an entire world.

But Atlantis has kept secrets for a reason. In the deepest places, something hunts the light. And the only way to stop it is to face the very darkness that Atlantis locked away.

From the moment Mia speaks her first promise, she'll discover that being brave doesn't mean you're not scared-it means you go anyway. With her brother by her side, a dolphin guide, and a shell that hums with possibility, Mia must choose between the safety of home and the courage to save a world that needs her.

Perfect for fans of Percy Jackson, Wings of Fire, and The Amulet series. A richly magical adventure about finding your strength, keeping your promises, and remembering that the world is bigger-and braver-than you imagined.