Li Mingyi's entire family believes in God, and he and his younger sister Li Lan enthusiastically expend for God. Li Mingyi performs his duties in another city for two years, but after he returns to his hometown, he learns that his sister often speaks of doctrine, and scolds others from position when she waters newcomers. Li Mingyi supports and helps Li Lan many times, hoping she will seek the truth and solve her own problems. But soon after, Li Mingyi and his co-workers find out that Li Lan has suppressed and retaliated against the brothers and sisters who give her advice, so they point out her problems to help her, but she doesn't accept at all. The brothers and sisters have discernment of Li Lan and report her problems one after another, so Li Mingyi and his co-workers dismiss her from her duties in accordance with principles. But Li Lan is dissatisfied about this, attacks and judges leaders and deacons at gatherings, says that they are suppressing her, misleads the brothers and sisters, draws people in to her side, and disturbs the brothers and sisters as they read God's word at meetings. Li Mingyi recognizes that his sister is an evildoer and should be expelled, but is afraid she will lose her chance at salvation, so he finds himself in a dilemma. Does he protect his sister based on his emotions, or does he expel her and maintain the work of the church by upholding the principles of truth? Please watch this movie.