Yagami Yui, the only daughter of a large company, is kidnapped on the day of her 20th birthday party. However, the plan fails miserably, and one of the perpetrators, Hayashida Daisuke, stands there stunned. However, the young lady who was supposed to be the hostage suddenly says, "Run away with me!", and so the strange escape of the two, "hostage and kidnapper," begins. A siege is being set up around them, and allies and enemies change places in an instant. Why did she choose to run away? What exactly is she trying to escape from? In fact, she has a hidden "secret"... A kidnapping incident sets the two people's strange destinies in motion. What will be the outcome of these two incomplete people who struggle to change reality?