"Pista ng Sigbin" is an animation that delves into the Filipino folklore surrounding the sigbin, a mythical creature known for its supernatural abilities and eerie presence. In the story, the Pista ng Sigbin refers to a unique festival dedicated to this creature, celebrated in a remote village.

The animation follows the preparations for the festival, which is meant to honor the sigbin and seek its blessings for prosperity and protection. As the village prepares for the event, strange occurrences begin to unsettle the townspeople—unexplained noises, mysterious shadows, and disappearing livestock.

The protagonist, a young villager named Clara, becomes curious about the true nature of the sigbin and the origins of the festival. She uncovers a hidden truth: the festival is not just a celebration but a way to appease the sigbin and ensure it does not wreak havoc on the village. Clara discovers that a rival group plans to disrupt the festival and harness the sigbin's power for their own ends.

As the festival day approaches, Clara must protect the village from these threats, ensuring the sigbin remains honored and pacified. The animation combines elements of Filipino folklore, supernatural intrigue, and the importance of tradition and community in safeguarding against dark forces.