Little Ida's mother is working for the Germans during WW2, and she is also having a relationship with a German SS-officer. Ida is experiencing the problems of having a mother who is involved with the enemy, without being old enough to understand what is actually going on.
Knutsen & Ludvigsen have taken up residence in a tunnel in lack of a more suitable place to stay. But this is against the rules and norms of society. Thus, the authorities soon make their presence to demand that they show respect for the law. Knutsen & Ludvigsen are banned from the tunnel and they end up in a struggle for existence.