"Remember; Can´t" - Plot

You woke up in middle of a destroyed city, don´t know even your name. All you can figure out its that maybe you were a soldier, and a war happened. Walked faintly by this post apolatiptic city without any objective. Far away from you, a girl you don´t recognize aproach, and she calls you by a name. Who´s she? What the hell happened? But more importante, who am i?