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?

The Elfkins are a group of tiny elf-like creatures who have been living underground for hundreds of years. They discover a struggling bakery in Cologne, Germany, and decide to help the owner revive the business by using their baking skills and making delicious treats. Along the way, they face challenges including a rival bakery and the moral dilemma of whether to reveal themselves to the human world.