Hwang Eunbi, going by the name Sinb, is the CEO and fashion designer of a famous fashion company called GA, short for Guardian Angel. One day she meets one of the most beautiful girls she's ever seen in her whole life, and receiving the task to find a new face for a soon-to-be-launched new fashion line, she immediately thinks of this person. Now, her job is to get that person to sign the contract agreeing that she'll work for her company, but that's easier said than done. Will SinB succeed in getting her to work for her? And what will happen to them after that?