In ancient China, the novice demon hunter Tang Sanzang uses a unique philosophy of subduing demons through compassion. He faces numerous challenges as he attempts to capture the dangerous Water Demon that terrorizes a village. Tang's unorthodox methods attract ridicule and doubt from the villagers and his fellow demon hunters. His efforts are complicated further when he encounters Miss Duan, a fierce and skilled demon huntress who becomes both a rival and an ally. Tang struggles with his own beliefs while trying to prove his worth in a world filled with formidable supernatural foes.

As their journey progresses, Tang and Miss Duan team up to capture even more powerful demons, including the enigmatic Pig Demon. Tang's convictions are continuously tested by the relentless and often violent methods Miss Duan employs. Their tumultuous partnership reveals deeper layers of Tang's character and the complexities of his mission. With each encounter, Tang learns crucial insights about true bravery and compassion, steadily growing into the legendary figure he's destined to become. Their journey ultimately shifts towards a path that will define their fates and the balance between humans and demons.