In a rain-soaked climax, Art confronts the vengeful spirit of Sorn at the pool, now morphed into a serpentine Naga with blood-red eyes. The spirit demands Art surrender herself, but she refuses, pleading to “be the last Mia Dek Ja” (the last blood debt). With the pangka submerged, Art cuts her palm and releases a vial of Nuan’s blood (symbolizing their mother’s guilt), shattering the curse. Sorn’s ghost, appeased, vanishes—but not before whispering that “the bloodline will always seek repayment.”

Possible plot holes to avoid: ensure that the curse's rules are clear, so the resolution makes sense. Maybe the grandmother's ghost is a red herring, and the real threat is the amulet itself. Or the curse requires a blood sacrifice, and the protagonist must stop her best friend from being chosen.

Need to include typical horror elements: jump scares, eerie settings, suspenseful music. Maybe incorporate some Thai cultural elements, like Buddhist rites or traditional ceremonies. Also, character development for Art as she becomes brave and selfless to save her friends and family.