"Patema Inverted: Beginning of the Day" is a prequel to the 2013 film "Patema Inverted," exploring the origins of its unique world and the relationship between its two central characters, Patema and Age. The story is set in a dystopian future where gravity anomalies have divided society into two groups: the Aigai, who live on the surface, and the underground-dwelling people of Aiga. The Aigai, led by a totalitarian regime, enforce strict rules to maintain order, while the underground inhabitants struggle to survive in a world where gravity behaves unpredictably.

The narrative begins with Patema, a young girl from the underground, venturing into forbidden tunnels out of curiosity. She discovers a hidden passage that leads to the surface, where she encounters Age, a surface-dwelling boy who has grown disillusioned with the oppressive regime. Their meeting is marked by a startling realization: Patema’s gravity is inverted relative to Age’s, causing her to fall "up" when he falls "down." This phenomenon becomes a central element of their relationship and the broader conflict between their societies.

As Patema and Age navigate their differences, they uncover the truth about their world’s fractured state. The Aigai government, led by the authoritarian Izamura, has long suppressed knowledge of the underground and the existence of inverted gravity. Izamura’s regime enforces a narrative that the underground people are dangerous and that their inversion is a threat to societal stability. However, through their interactions, Patema and Age begin to question these beliefs, realizing that their societies are more interconnected than they were led to believe.

The series delves into themes of trust, cooperation, and the consequences of societal division. Patema’s innocence and determination contrast with Age’s skepticism and growing sense of responsibility, creating a dynamic partnership that drives the narrative forward. Their journey reveals the origins of the gravity anomalies and the experiments conducted by scientists in the past, which inadvertently caused the split between the surface and underground worlds.

"Patema Inverted: Beginning of the Day" serves as a foundation for the events of the film, providing context for the characters’ motivations and the broader conflict. It highlights the importance of understanding and empathy in overcoming prejudice and fear, as Patema and Age work together to bridge the gap between their worlds. The series maintains a focus on the central mystery of gravity inversion while exploring the personal growth of its protagonists and the societal forces that shape their lives.