Adventurous 17-year-old Anna wishes to see the divided Berlin and joins a youth group which tours West and East Berlin. On the gloomy streets of East Berlin, she meets Phillip and the two end up falling in love. But the Iron Curtain of the Cold War prevents them from staying together for more than one day. The dreaded secret police and the well-guarded border threaten Anna and Phillip’s relationship and even endanger Phillip’s life. Soon, writing and receiving love letters is not enough and in the desperation for each other’s embrace, Anna and Phillip start taking more and more daring risks in order to spend time together. As the thread from which their relationship hangs by starts to weaken, their love becomes a dangerous gamble.