An ordinary girl, Xian Yu, is simple, kind and has no scheming. She is ignorant but pursues perfection. She is infinitely sincere to her friends, has a blind longing for life, and is confused about love. After entering the society, she suffered repeated blows, framed by friends, and unfairness in the workplace. In the eyes of others and in her own heart, she was just a salted fish with no chance to turn over, and she fell into endless confusion about life. However, kindness and innocence finally helped her win new friendships and find her first love. In the hearts of those who truly love her, she is like a cool rain in the world of mortals, fresh and sincere. After being tempered by life, she finally understands the true meaning of life and love, and joins hands with her beloved to share this "free time in the world of mortals".