Kim HyunA , is a girl who works for herself only , Living by herself without her parents has never devastated her , instead it gives her the strength to live and carry on , Finding an occupation to earn money was very hard for her until , A man named , Choi Siwon has gave her the chance to work herself up by being Dinerchoi's Delivery Girl. Her work was always pleasant to her , Even her co-workers envy her for being so positive about being a delivery girl despite the average amount of the salary they have been working for to earn , She has been so joyful at work than ever until , One day an unknown number called the fastfood delivery's hotline.