Ana Dakkar is a student at Harding-Pencroft Academy, a school that trains students for marine science and underwater missions. Her life changes when the academy is suddenly destroyed in a surprise attack.
She and the surviving students escape aboard the legendary submarine Nautilus. Ana soon discovers that there is a secret war between her school and a rival organization, and that she is deeply connected to the legacy of Captain Nemo.
As she struggles to survive, Ana must uncover the truth about her family, face betrayal, and take on a leadership role in a dangerous underwater conflict.