An Jing (Bai Bing) and An Ning (Lou Yixiao) are twin sisters who have a very good relationship with each other. An Jing has a gentle and pleasant personality, while An Ning is just the opposite. She is unruly and has a blood of yearning for freedom in her bones. After her parents divorced, An Ning followed her remarried father to her new home. Not long after, she had a younger sister, An Le (Liu Yase). However, An Le was abducted by human traffickers when she was ten years old and has been missing since then. Time flows silently, and the three ill-fated girls grow up gradually. An Jing has experienced two failed relationships in succession. She is frustrated and begins to give up on herself, while An Le unfortunately falls into the hands of a pickpocket gang and is forced to become their "tool". Only An Ning, who is still strong and resilient in the face of countless failures and setbacks, can she, who is always optimistic and optimistic, find her own sky?