"Atlanta St. Streamer" is a top aristocratic private school, referred to as "No. 7 Academy".
Lin Erran, the most perfect student union president in history.
An Cunxi, the soul of the band Gui Ma Elf.
They wander between individuals and families, making compromises for life.
How should they choose between love and reality?
The road is long, and when love turns into music and youth becomes song, can they walk together forever...?