"Fair, then Partly Piggy" is a fantasy-comedy anime that blends whimsical humor with a touch of emotional depth. The story centers on a young girl named Mei, who lives in a small, rural village. One day, while exploring the forest, Mei encounters a mysterious pig-like creature named Panko, who claims to be a celestial being cursed to live as a pig. Panko explains that he was cast down from the heavens for breaking a divine rule and must now perform good deeds to regain his celestial form. Intrigued by his plight, Mei decides to help Panko on his quest, forming an unlikely partnership.

As Mei and Panko embark on their journey, they encounter a variety of eccentric characters and face numerous challenges. Each episode typically revolves around a self-contained story where the duo helps someone in need, often involving themes of kindness, forgiveness, and self-discovery. Along the way, Mei learns valuable life lessons, while Panko gradually begins to understand the complexities of human emotions and relationships. The series balances lighthearted comedy with moments of heartfelt sincerity, creating a narrative that appeals to both younger and older audiences.

The main characters are Mei, a curious and compassionate girl with a strong sense of justice, and Panko, the grumpy yet endearing pig-like celestial being. Supporting characters include Mei’s family, who provide a grounded perspective on her adventures, and various villagers and supernatural entities who add depth to the world. The anime’s episodic structure allows for a wide range of storytelling, from humorous misadventures to poignant tales of redemption. Through its charming narrative and relatable themes, "Fair, then Partly Piggy" offers an engaging exploration of human nature and the power of empathy.