Sam (Sean PAN) has been here, but his IQ is only equivalent to a 7-year-old child. By chance, he took in a homeless woman, and gave birth to her daughter Lucy. However, when her daughter was born, she left her mother, leaving Sam and the young girl alone.
In a twinkling of an eye, her daughter Lucy is 7 years old. She is smart, diligent, and studious. She has more intelligence than Sam, and Sam cannot cope with many questions raised by her daughter. In order not to let her father feel sad, Lucy deliberately moved her father's mental level, which is obviously not conducive to Lucy's intellectual and emotional development. This special father and daughter attracted the attention of social workers. They thought that Sam was not suitable to raise Lucy again, and took Lucy away from him to find a normal person as a adoptive mother for her. Sam was unwilling to lose his daughter and decided to hire a female attorney, Rita (Michelle FIFO), to help him seek custody.
Although she is brilliant, she is selfish and only cares about herself. In the beginning, she thought that the case could not win, and she didn't want to answer it. She simply couldn't stand the enthusiasm of her colleagues. To prove to everyone that she was also concerned about social welfare, she barely got it. To her surprise, in her contact with Sam, Rita was touched by Sam's Deep sincere and unconditional fatherly love for Lucy and realized that Sam, like normal people, has the right to be with her daughter.
At the same time, during the legal proceedings, Rita gradually clarified her own life. For many years, she ignored her son and family for her work. It was Sam who urged her to reflect on her family.