Shu Ai has been fond of music since she was a child. Her parents divorced when she was six years old, and she came to Beijing alone with her mother at a young age. Lonely, she became obsessed with the Ferris wheel. One night, she met Yuan Jintian, who also liked Ferris wheels. The two promised each other that they would definitely remember each other in 10 years. By chance, 10 years later, Shu Ai met Yuan Jintian again, but he mistakenly regarded Shu Ai's good friend Lu Yimei as the person in his memories...