A mystical world filled with magic and mystery in a castle floating on the sea!

Teenaged cousins Echo Hernandez and Chettermelon Jones discover a peculiar castle made entirely of amethyst. Entering the structure, they find a fantastic palace with whimsical residents and magical properties. Vines and bushes crawl about performing daily tasks, long-extinct creatures roam the corridors, meandering spirits offer dubious advice, and there's a heavy scent of peculiar in the air.

But all is not well in this mystical haven. The castle tumbles into the sea and is carried away, trapping the cousins aboard. Uncovering a plot to kill the king, Echo, Chettermelon, and a new band of friends are soon thrown into a world of conspiracy and intrigue. With only their ingenuity and their bond of trust in each other to guide them, they have mere hours to stop a brutal attack on innocent civilians, rescue the king, and expose the true culprit before hundreds die.

At once, whimsical, quirky, and action-packed, The Voyage of the Amethyst Castle is a manic romp through a unique and enchanted world that is guaranteed to capture the imaginations of all.