What is the theme of sister-in-law's movie? What are the main stories and plot introductions of sister-in-law's movies?

The domestic drama "Sister-in-law" directed by Kan Jiawei was written by Jing Wong and starred by Lacker, Zhang Jincheng and Philip Ng. This is a crime mystery drama.

What is the theme of sister-in-law's movie? What are the main stories and plot introductions of sister-in-law's movies?

The film tells the story of Zuo Lanben, a beautiful young girl, who is a pure and kind girl and has a boyfriend who has been in love for many years. Zuo Lan was humiliated in the process of debt collection because his father was addicted to gambling. Zuo Lan's heart is dying at the thought of her boyfriend who never gave up on me, and sent Zuo Lan to the boss's bed for his superior position. Brother Drunk, the eldest brother of Jiulongzhai, saved Zuo Lan who wanted to commit suicide. Zuo Lan decided to follow Brother Zui to get back at those who ruined his life. Through repeated experiences, Zuo Lan became a traitor in Jiulongzhai and a veritable Jianghu sister-in-law.

After Zuo Lan took over the business in Jiulongzhai, he planned to kill the corrupt black police and all the people who had hurt himself and take revenge. Chen Jie, who has been with Singer for many years, has a crush on Zuo Lan. Seeing the change of Zuo Lan, she was very upset and wanted to persuade her to turn back. On his deathbed, Brother Xian wanted to officially spread to Zuo Lan and told Chen Jie that he was a police undercover. At present, the Hong Kong Independent Commission Against Corruption has begun to clean up the Kowloon Walled District. What will Zuo Lan do?