"Kalamansi sa Dila ng Aswang" is a Tagalog horror animation based on a true story about a family that encounters an aswang in their village. The story follows Rita, who lives in a rural town where strange occurrences begin happening—animals die mysteriously, and eerie noises are heard at night. One evening, Rita’s grandmother tells her an old remedy to protect against an aswang: placing kalamansi on their tongues can weaken the creature.

One night, the family suspects that an aswang is trying to enter their home. In a desperate attempt to protect themselves, they place kalamansi in the corners of their house and prepare to confront the creature. When the aswang finally reveals itself, they use the kalamansi to weaken it and drive it away.

"Kalamansi sa Dila ng Aswang" combines Filipino folklore with real-life horror, highlighting traditional methods used to fight supernatural creatures. The story explores fear, family, and survival, emphasizing the power of cultural knowledge in the face of danger.