A little girl Tiantian was born in the countryside. When she was a child, her father and mother left the countryside and came to live in the city. After two years, her mother finally brought her to the city. What happened to her from childhood to adulthood, she went to school and lived in the city, and gave up a lot of things for the trust of her parents. When she met him, a boy with a completely different personality from hers, complex emotions began. . . . .