Cha Soyeon never took the time to fit in -- she felt no need to. At school and home, she was nothing but a quiet presence in the background, who had no purpose besides simply existing.Until she puts on her mask.No one has heard of Cha Soyeon, but everyone has heard of CS, the mysterious masked dancer who shows up to dance competitions around the city. She never speaks, never reveals her true self, and never loses. Her impressive dance skills easily compensate for her silent presence, making her one of the most respected and well known dancers around. V, a rookie performer who just moved to the city, has taken an interest in CS. After watching her dance, V decides he will stop at nothing to find out who CS really is.