Three sisters live in a small Norwegian town with their slightly eccentric mum and dad. They are both architects and he's the only man in town with a moustache! It's a very regulated life these girls live, especially when compared with their neighbours downstairs who have just about everything they need to have a lively time. The siblings want a bike. They ask their parents and promise to share it, even to ride it all at once if needs be. OK, they agree - but it will be a special bike eventually coming from the UK. Meantime events with the family downstairs take a bit of an unfortunate turn and...