When a mysterious illness causes children in Phanom Nakha to develop snake-like scales, Dr. Benedict is called in to investigate. Assisting him is Asia, a skilled medical illustrator chosen to document the strange phenomenon. Their journey takes an unexpected turn when they meet Phumkhaobin—a spirited yet enigmatic man, and the younger brother of Asia’s friend, Pheka.

As the research deepens, Asia finds herself entangled not only in a medical mystery but also in the ancient legend of a village that worships serpents—where science and myth begin to blur, and fate takes a serpentine path of its own.