The society was afraid that illustrator Ni Xiao would knock over top student Su Lin at the beginning of school, so he drew a turtle on his precious sheet music to apologize. After being forced to pretend to be a couple, she discovered that he was the music god she had admired for a long time. From secretly drawing sleeping faces in the library to sharing headphones on rainy days, the boundaries of contracts are gradually blurring. When rumors spread on forums and family marriages came under pressure, he defended himself in public: "I like the turtle she drew." And in the spotlight of the award ceremony, she finally heard the song he wrote for her - "Quietly"