Throughout the 20th century, Milo Thatch, a young linguist and cartographer working at the natural history museum, becomes obsessed with the legendary sunken city of Atlantis. His life takes an unexpected turn when he joins an expedition led by the eccentric billionaire Preston Whitmore, who offers him the chance to uncover the secrets of this ancient civilization. Alongside a diverse team of adventurers, ranging from an experienced mechanic to a brave warrior, they embark on a dangerous journey across the ocean in a submarine.
As they descend into the depths of the sea, Milo and his companions face numerous challenges, from sea creatures to unexpected betrayals. However, the greatest challenge arises when they discover that the Atlanteans, descendants of an incredibly advanced culture, still inhabit the underwater realm, preserving their traditions and technology while facing the threat of an imminent war that could define their future.
Milo, who has always dreamed of discovering Atlantis, finds himself at a crossroads between two worlds: the ambition of his expedition and the need to protect his newly discovered family. With a brave heart and his insatiable curiosity, he must make decisions that could change the fate of Atlantis and his own home, while confronting the very shadows of human greed. This is an epic journey that connects the past with the present, challenging the characters to discover the true value of their shared history.