Lotta, 11 years old, and best friend Cheyenne don't get along with the arrogant Berenike, so they don't want to let it bother them when they're the only ones not invited to her party.

Lotta Petermann is looking forward to her first class trip. Finally without parents and with her best friends Amrum unsicher machen - that promises pure adventure! But Mama Sabine sabotages Lotta's plans and suggests Papa Rainer, of all people, to accompany her on the class trip - how embarrassing!