"Early Reins" is a historical fantasy anime set in a fictionalized version of the Wild West, blending elements of Western lore with supernatural themes. The narrative centers on a young girl named Elsie, who becomes the master of a mysterious and powerful horse named Early. Early is no ordinary steed; it possesses the ability to transform into a humanoid form, granting Elsie extraordinary abilities and protection. Together, they embark on a journey across a lawless frontier filled with bandits, corrupt officials, and supernatural threats.

Elsie’s journey begins after her family is tragically killed by a group of outlaws. Seeking justice and a new purpose, she forms a bond with Early, who becomes both her protector and companion. As they travel, they encounter a diverse cast of characters, including bounty hunters, rogue mercenaries, and other individuals tied to the supernatural forces at play in the world. The series explores themes of vengeance, redemption, and the struggle for survival in a harsh and unforgiving landscape.

The plot unfolds through episodic adventures, with each episode introducing new challenges and adversaries. These encounters gradually reveal a larger, overarching conflict involving a shadowy organization seeking to harness the power of creatures like Early for their own nefarious purposes. Elsie and Early must navigate this dangerous web of intrigue while staying true to their mission of justice and self-discovery.

Key characters include Elsie, whose determination and resilience drive the narrative; Early, whose dual nature as both a horse and a humanoid figure adds depth to their dynamic; and a recurring antagonist, a ruthless mercenary leader who serves as a foil to Elsie’s ideals. The series balances action-packed sequences with moments of introspection, exploring the moral complexities of its characters and the world they inhabit. Through its blend of Western aesthetics and supernatural elements, "Early Reins" offers a unique take on the historical fantasy genre.