Wang Shuangjin, from the countryside, takes matters into her own hands and goes to the city to take care of her grandson. However, she accidentally discovers that the nanny hired by her son might be a fugitive human trafficker. Faced with doubts from her son and daughter-in-law, as well as false accusations from the nanny, Wang Shuangjin manages to find evidence proving that the nanny is indeed a human trafficker!