From MangaHelpers:

In early 1941, Krilo is living a quiet life in his hometown in Yugoslavia. He's a bit of a problem student and is influenced by the political ideas brought back by his older brother Ivan, a college student in Zagreb. Even though there are news reports and rumours of Nazi Germany on the move, it seems impossible that war could come to their peaceful village.

In late March, the Yugoslav government signed the Tripartite Treaty with Hitler, but the government fell to a coup d'état only days later. In early April, Yugoslavia is invaded by Nazi Germany.

The invasion shatters Krilo's peaceful life. Countless people in the village are killed during the German invasion, and the others are rounded up. Krilo evades capture but has no idea what to do next. He sets out for Zagreb in search of his older brother. Krilo's childhood friend, Fi, on the other hand, is among those who are rounded up. She faces a completely different kind of adversity as she is processed with the others by the Nazi military. The invasion may be over, but the fight for Yugoslavia has just begun.

[tethysdust]