Mr. Mo, Why Do We Have Such Deep Love for the Rest of Our Lives?

Her mother was in a car accident and she had no way to seek help, but her boyfriend was having an affair with her sister. Desperate, she sold herself. Looking at her mother's consent form for amputation, she hesitated whether to sign it. He appeared domineeringly and saved her mother's leg. It turns out that everything is just a conspiracy of insidious people...