Rosè's parents died when she was 8 from an accident and was taken by her aunt. The more she grew the more she wanted to know why they died. Jungkook was adopted by a rich police chief. His life was good but he can't help remember his dead sister and his long lost brother whom he does not have any memories of except him getting taken away. Both grew up wanting to be police. If both encounter each other can they solve both's problem? Or will they get themselves endanger?