Germany, 1929. Helmut Machemer and Erna Schwalbe fall madly in love and marry in 1932. Everything indicates that a bright future awaits them; but then, in 1933, Adolf Hitler and the Nazi Party rise to power and their lives are suddenly put in danger because of Erna's Jewish ancestry.

Erna, Helmut and the Nazis

Helvi's world is turned upside down when she discovers the existence of a technically advanced Elfkin gang that, in stark contrast to Elfie’s own clan, is second to none when it comes to fun and thrill-seeking. Can Helvi’s friendship with Bo, the youngest gang member, reconcile the two Elfkin clans after more than 250 years?