After travelling through a network of caves and a dormant volcano, the team reach Atlantis where they are greeted by Kida, who is actually over eight-thousand years old, but resembles a young woman, and discover that the Atlantean language is the basis for many existing languages. Kida enlists Milo's help in decoding the Atlantean language, which has been long forgotten by the natives. By swimming deep within the city's submerged ruins, and translating underwater murals, he discovers that the Heart of Atlantis provides the city with power and extends their lives through the crystals worn around their necks; he is surprised that this isn't mentioned in the journal, but upon examination realises a page is missing.