Naomi is a ten-year-old dreamer who lives and breathes the ocean, thanks to her parents, both brilliant Oceanographers. One night, while her babysitter is fast asleep, Naomi sneaks into an unused lab in their new home and discovers her parents' secret: the Aqua-Pod, a powerful research submersible. Drawn in by a strange humming sound, Naomi accidentally hits the launch button. The floor beneath her drops away, and she plunges down a hidden shaft into the sea! Now forced to become "Captain," Naomi begins an unscheduled deep-sea expedition. Guided by the Pod’s system, Echo, she descends through the ocean's zones, discovering hidden worlds: from the colorful coral reefs and communicating dolphins to the light-making Anglerfish and the crushing depths of the Mariana Trench. But the journey is long, and Naomi must use all her new knowledge to pilot the Aqua-Pod back to the hidden lab. Can she quietly secure the sub and sneak into the living room before her parents return home from dinner and discover her amazing, secret dive? An exciting adventure that explores the most fantastic, remote parts of our planet, perfect for future oceanographers and explorers!