Tartaglia, known as Childe, is no stranger to dangerous adventures. As a member of the Fatui, he's fought countless battles across Teyvat, and his thirst for excitement has led him to seek out every challenge. But recently, his search for power has led him to the Golden House in Liyue, where rumors swirl about an ancient and mysterious force buried beneath the sea—a power that could rival even the most powerful of the Archons.

One night, Tartaglia receives an anonymous letter that leads him to the coast of Liyue, to a sunken temple beneath the waves. The letter hints at an ancient relic tied to the Abyss, and he knows that such a relic could be more than just a treasure—it could hold the key to understanding the mysterious forces at play in Teyvat. Sensing a rare opportunity, Tartaglia seeks out the Traveler, knowing that their unique experiences and abilities could be the key to locating the relic.

Together, they embark on a journey to uncover the secrets hidden beneath the Golden House, navigating a series of trials set by ancient guardians and uncovering long-forgotten truths about the Abyss Order and its ties to the deep ocean. As they dive into the ruins, they encounter submerged labyrinths, ancient puzzles, and dark creatures that have guarded the site for millennia.

As they approach the heart of the ruins, Tartaglia and the Traveler discover a powerful artifact linked to the Abyss—a weapon that can control the currents of the sea itself. However, the artifact is not unguarded. Tartaglia’s pursuit of power draws the attention of a mysterious figure from his past, someone tied to his own history in the Abyss. This figure seeks to claim the artifact and use it to bring about a cataclysmic shift in Teyvat.

Now, Tartaglia must confront his own inner demons as he decides whether to seize the power of the artifact for himself or protect the world from its destructive force. With the Traveler’s help, they must navigate the moral complexities of ambition and desire while uncovering the true purpose of the Abyss