"Tales of Phantasia" is an anime adaptation of the classic role-playing game of the same name. The story is set in a fantasy world where the balance between good and evil is disrupted by the resurrection of the malevolent sorcerer Dhaos. The narrative begins with the protagonist, Cless Alvein, a young swordsman from the village of Totus, who witnesses the destruction of his home and the murder of his parents by mysterious forces. Cless teams up with Mint Adenade, a kind-hearted healer, and together they uncover a plot involving ancient artifacts and a time-traveling conflict.

The duo discovers that Dhaos, sealed away centuries ago, has been revived and seeks to harness the power of the Mana Tree to achieve his destructive goals. Cless and Mint are joined by additional allies, including Arche Klein, a half-elf sorceress with a mischievous personality, and Chester Burklight, Cless's childhood friend and skilled archer. As the group travels across time and space, they learn that Dhaos's motivations are tied to the survival of his own dying world, adding complexity to his character.

The plot unfolds through a series of battles, explorations, and revelations, as the heroes gather the necessary power and knowledge to confront Dhaos. The story delves into themes of sacrifice, redemption, and the consequences of unchecked ambition. The characters' relationships and personal growth are central to the narrative, with Cless evolving from a grieving youth to a determined leader. The anime captures the essence of the game's epic scope, blending action, fantasy, and emotional depth. The conclusion ties together the threads of time travel and interdimensional conflict, offering a resolution that balances triumph and reflection.