Secret passages in a hillside town

In a small hillside town, Olli Suominen - publisher and discontented husband - is constantly losing umbrellas.

He has also joined a film club. And Greta, an old flame, has added him on Facebook. As his life becomes more and more entangled with Greta's, and his wife and son are dragged into the aftermath of this teenage romance, Olli is forced to make a horrible choice.

But does he really want to know what the secret passages are?

Can he be sure that Greta is who she seems to be? And what actually happened on that summer's day long ago?