Nichkyun and Sa-eun are childhood friends who are separated because of a careless mistake. Soon, Nichkyun becomes part of a famous kpop band, 2PM, while Sa-eun becomes a make-up and hairstylist. One fateful day, twisted fate brings them together when Sa-eun gets hired to do an important job... Will the two childhood sweethearts open their hearts to each other again? Or will they bury away their feelings?