"Popolocrois Monogatari" is a fantasy anime series based on the role-playing game "Popolocrois: A New Departure." The narrative centers on Prince Pietro, a young boy from the peaceful kingdom of Popolocrois, who embarks on a journey to uncover his true identity and protect his homeland from dark forces. Pietro is the son of a human king and a dragon priestess, a heritage that grants him unique abilities but also places him at the center of a prophecy tied to the fate of his world.

The story begins with Pietro learning about his mother, who sacrificed herself to seal away an ancient evil known as the Dark Prince. When the seal weakens, Pietro sets out to prevent the Dark Prince's return, accompanied by his loyal companions, including the spirited witch Narcia and the brave knight GamiGami. Along the way, Pietro encounters various allies and adversaries, each contributing to his growth and understanding of his dual heritage.

The series explores themes of courage, friendship, and self-discovery as Pietro navigates a world filled with magical creatures, ancient legends, and moral dilemmas. His journey takes him through diverse landscapes, from enchanted forests to treacherous mountains, as he gathers the strength and wisdom needed to confront the Dark Prince. The narrative also delves into the complexities of Pietro's lineage, highlighting the tension between his human and dragon heritage and the responsibilities it entails.

As the story progresses, Pietro uncovers the truth about his mother's sacrifice and the true nature of the Dark Prince, leading to a climactic battle that tests his resolve and the bonds he has formed. The series balances episodic adventures with an overarching plot, ensuring a cohesive narrative that builds toward its conclusion. Through its exploration of Pietro's journey, "Popolocrois Monogatari" presents a tale of heroism and the enduring power of hope in the face of darkness.