Lee Donghae, a resident of the future, takes himself to the past era in order to get the material he needed for his research. However, he was trapped in a warzone where mercy is nonexistent. How can he ever face the challenge? 

But then, in the midst of the despair, some light sparked from above. It was Yoona, a native from the past, a lady living in the warzone and the only girl who made Donghae felt he's special.

He loved Yoona. He loved her so much that he will allow himself stay in her time forever. But is Donghae aware of the consequences of his love????  Is he willing to risk his own life to be with her? As he would likely say, he is ready to die for her. But what if Yoona's life would be the consequence???????