Tiffany Hwang, your typical 18 year old student living in the heart of Seoul with her father Siwon and her adopted sister Seohyun. Her and her family currently reside on the top floor of the number one ranked hotel in South Korea: Sheraton Seoul D Cube. Her father, being in top command of the South Korea's police, is always on the move across the country, which meant he had to relocate constantly. They originally lived in San Francisco, California, but ever since her dad got the big promotion, they flew to South Korea; their homeland. Even though they moved around a lot, they were happy for they were all together. Life for the Hwang family was pretty good at the moment, that is, until one day, everything turned for the worst. Tiffany was home sick with the flu, when she woke up to an empty suite. She found it extremely out of the ordinary for her suite to be completely silent for her sister was almost always home studying, while their dad was at work. After viewing an urgent announcement on the t.v., ordering everyone to stay inside, and the wild graphic scene the news broadcasted, she realized that she had to come up with a plan. Her family was missing and she was all left alone with them.