Back to the past! Mira and Memet are spending their vacation at a Viking camp. At first, they are busy exploring the village. However, over time, the siblings become suspicious. They somehow feel that something is not right here. They hear strange animal sounds and find unusual objects. What role does supervisor Katja play? Now the two are paying closer attention! Chapter by chapter, early readers from the 2nd grade accompany the siblings in their investigations. They solve many different puzzles using an innovative decoding system. After eight chapters, they will know who is behind the strange occurrences. Guess along and learn to read playfully – an exciting EXIT® story for early readers.