Xia Mingxi was a princess who had everything she wanted for the first five years of her life, but overnight her father became a murderer and her mother died of illness. She moved to a villa in the suburbs to be raised by her grandmother. Grandma was a sharp-tongued person and worked part-time jobs to raise her. Originally, she only had the unblooming cherry blossom tree in front of her door for company, until one day a serious but loving old lady (Teacher Tang) living in the bungalow in front changed her destiny. She was a mysterious and reclusive musician, and it was the sadness in Xia Mingxi's eyes that attracted her. She used the music of the piano and books to soothe her scars and loneliness. One day, when his grandson He Yuan and Xia Mingxi met, Xia Mingxi's life bloomed like cherry blossoms in an instant. After a short vacation, He Yuan would leave. And when Teacher Tang died, the two lost contact completely. Will the promise made under the cherry blossom tree be fulfilled, or will everything be just cherry blossom petals in memory that have drifted away in the wind? . . . . .