Here is a possible concise summary:
The demon hunter Chen and his disciples, the monkey king, the pig and the fish, continue their journey to the west to find the sacred writings of the Indians. Along the way, they face various demons, such as giant spiders, the red boy and a witch. Chen also falls in love with a girl named Joan, who turns out to be a demon as well. The monkey king tries to protect his master from the demons, but also causes trouble with his rebellious attitude. In the end, they defeat the witch with the help of Buddha and Chen frees Joan's spirit. They learn to trust each other and become a great team.
Here are some key facts extracted from the text:
1. The text is a summary of the movie "The Demon Hunter".
2. The main characters are Chen, a monk who seeks the sacred writings of India, and his disciples: the Monkey King, the Pig, and the Fish, who are former demons purified by Chen.
3. Along their journey, they face various enemies and challenges, such as the spider demon, the red boy, and the witch.
4. Chen also falls in love with a girl named Joan, who turns out to be a demon as well.
5. The movie ends with Chen and his disciples becoming a great team and continuing their mission.