I saw this movie twice - once with my parents and the other time together with my class. The movie is about a school class from rural Salzburg county which is doing a day trip to Salzburg city to do some sight-seeing there. There's only one bad thing about the trip: it's exactly on the day where Salzburg's football team has got a very important match. The class isn't allowed to go there, but two boys and one girl don't care about what their teacher said.
They go to the match and - surprisingly - get tickets for Salzburg football dome. After the game they even get autographs by some of the famous football players.
As it's already late they're thinking of re-joining their group to get home again. As expected, they arrive exactly at the parking site when the bus leaves. So they have no other chance but staying overnight in Salzburg. This is also connected with some trouble but on the next day they find their teacher who stayed in Salzburg are sent home by train.
All together it's a real good german movie I'd recommend every teacher and student to view at least once - it's giving good advice for the next class trips! :)