The time has come. Mom drives with Tara, Petja and Maus to their new house on Möwenweg. Dad is already waiting and the movers have their hands full. The children curiously explore all the rooms. They are excited about the neighbors. Will Tara find a friend? Do some boys live here who can keep Petja company? And anyway: will Möwenweg be a girls' street or do the boys have the upper hand here?