"Three Wolves Mountain" is a manga series that centers on a remote, mountainous region inhabited by three distinct wolf clans, each with its own traditions, hierarchies, and conflicts. The story begins with the sudden disappearance of the Moonstone, a sacred relic that maintains balance and peace among the clans. Its absence triggers a power struggle, as each clan suspects the others of theft, leading to escalating tensions and violence.

The protagonist, Kaito, is a young wolf from the Silver Fang clan, known for their agility and hunting prowess. Kaito is an outcast due to his mixed heritage, as his mother was from the rival Shadow Claw clan. Despite his marginalized status, Kaito possesses a unique ability to communicate with spirits, a trait that becomes crucial as the story unfolds. When the Moonstone vanishes, Kaito is reluctantly drawn into the conflict, tasked with uncovering the truth behind its disappearance. Along the way, he forms uneasy alliances with members of the other clans, including Yuna, a fierce warrior from the Shadow Claw clan, and Haru, a cunning strategist from the Iron Howl clan.

As Kaito investigates, he uncovers a deeper conspiracy involving an ancient prophecy that foretells the destruction of the mountain if the clans fail to unite. The prophecy is tied to the Moonstone, which is revealed to be more than a mere relic—it is a key to sealing a long-dormant evil that threatens to engulf the region. The narrative explores themes of trust, identity, and the consequences of division, as Kaito and his companions must navigate betrayal, personal vendettas, and the growing threat of the ancient evil.

The story is structured around a series of escalating conflicts, both internal and external, as the characters grapple with their loyalties and the weight of their responsibilities. The climax involves a desperate battle to reclaim the Moonstone and prevent the prophecy from coming to pass, with Kaito at the center of the struggle. The resolution sees the clans tentatively reconciling, though the scars of their conflict remain, leaving room for future developments in the series.