"Tabi-Hani" centers on the journey of Hani, a young woman who embarks on a quest to uncover the truth behind her family's mysterious past. The narrative begins in a small, secluded village where Hani lives a quiet life, unaware of the secrets surrounding her lineage. After discovering an ancient artifact hidden in her family home, she learns of a long-forgotten prophecy tied to her ancestors. This artifact, a intricately designed compass, is said to guide its bearer to a mythical land known as "Eien no Kuni," or the Eternal Country, where the boundaries between time and reality blur.

As Hani sets out on her journey, she encounters a diverse group of companions, each with their own motivations and connections to the prophecy. Among them is Ren, a skilled swordsman with a tragic past, and Aya, a spirited alchemist seeking to unlock the secrets of the Eternal Country for her own purposes. Together, they traverse a richly detailed world filled with ancient ruins, mystical creatures, and hidden dangers. Along the way, Hani gradually uncovers fragments of her family's history, revealing their role in a centuries-old conflict between powerful factions vying for control over the Eternal Country.

The plot unfolds through a series of interconnected arcs, each delving deeper into the lore of the world and the characters' personal struggles. Hani's growth as a protagonist is marked by her increasing understanding of her own identity and the weight of her responsibilities. The narrative explores themes of legacy, sacrifice, and the pursuit of truth, as Hani and her companions face moral dilemmas and confront the consequences of their actions. The story builds toward a climactic confrontation in the Eternal Country, where the true nature of the prophecy and Hani's destiny are revealed.

The series balances action, mystery, and character-driven drama, with a focus on the evolving relationships between the main cast. The world-building is intricate, with a blend of fantasy and historical elements that create a vivid backdrop for the story. "Tabi-Hani" offers a compelling narrative that intertwines personal journeys with larger, mythic stakes, making it a notable entry in the fantasy-adventure genre.