Kaia Cayden, a young, adventurous, water-loving girl born in the South Pacific's Hidden Sapphire Archipelago, bears an exceptional gift unlike any other; to go underwater to unseen depths for hours on end... on a single breath of air. When her loving parents go missing on an undersea expedition, Kaia rides an anchor to the depths to find them. in her search, she finds a lot more than she bargained for down in the blue, from friendly undersea creatures to dangerous, threatening undersea hunters. On top of that, throughout this entire adventure, young Kaia has no backup air supply, so she must brave through this entire underwater adventure... ALL IN ONE BREATH.