It was filmed and produced at locations in the canton of Zürich in Switzerland, and stars Mathias Gnädinger, Walo Lüönd and Stephanie Glaser.

[2] Franz (Mathias Gnädinger) is shocked when he returns after 30 years to his hometown Sternenberg – the primary school of Sternenberg will be closed as there is a just a handful of students in the small isolated village in the Töss Valley, and the teacher thus would lose her job.

Franz is personally concerned and hides a secret, as the teacher, Eva Joos (Sara Capretti), is his daughter.

The trick seems to work, and the minimum number of students is reached, but it needs to ensure that the school will continuously be funded.

[3][4][1] The title of the film derives from the former independent municipality of Sternenberg that merged in 2015 with Bauma ZH.