A brand-new adventure from the world of Disney's Atlantis! When Milo and Kida discover a brand-new monstrous threat below the kingdom of Atlantis, it's going to take all of their bravery and ingenuity to find the secrets below the waves, and how to surpass a strange new challenge. And they'll also need to discover what ancient fables from Atlantis's past are the key to unlocking the safety of their future! When a giant monstrous threat bubbles up from the lost past of Atlantis, Milo and Kida will need to save Atlanteans while also protecting the natural world around them. Sea monsters, high adventure, and more in this bold new OGN!