The Love of Immortal(仙书奇谭)

The film tells that Yan Xian's master passed him a demon catcher before he died, but the demon catcher was stolen by the three cat demon. The stranger caught the "demon in the ear" inside the king. Yan Seventeen caught a rat demon who had stolen his money and treasure, and this rat demon named Rat Laibao was the real successor of the demon catcher.