Eight children between four and eleven years old move into a new housing development. They go to the same school and play together. There's the boy Petja and his friends Vincent, Laurin and Maus, and the girl Tara and her friends Tieneke, Fritzi and Jul. They often have different opinions and it doesn't always turn out to be fun. But Möwenweg is ultimately always the most beautiful place in the world.
The show is dedicated to building interactive skills between parents and their toddler children in five segments: Let's Go!, You and Me Theater, Famous and 1/2, Ssh!, Mime Your Own Business.
British Museum tour guide named Agatha in each episode guides three children from one town on a quest to help them defeat the evil Dark Lord, whose servants, cowled figures called the Dark Forces, glide the darkened corridors and display rooms of the museum. The children have only one night to discover a relic in the museum itself and they have to win three challenges.