Jakob Yzermans is an American salesman looking for his roots in Rotterdam. He thinks his father (Hendrik Yzermans) has left Holland with the money he took from his collegues. Jakob is trying to get the money together to repay the money. While doing so he encounters more and more problems.

At first, singer Ferry Heijne dances among a group of women, but soon he literally loses his grip on the situation. Via an open-plan office - full of mindlessly typing men and musicians in a conference room - he finds himself in a photocopier and ends up as a black-and-white illustration in a book.

The Long River Slides is a musical ode to sadness. 'De Kift' frontman Ferry Heijne sets sail and meets people willing to share their stories with him. The poetic brass band punk provides comfort along the waterfront.

This is a stage registration of the musical theatre play 'Kees de Jongen' by Dutch actor Frank Groothof and the Avant-garde music band De Kift. The play is based on the novel with the same title by Theo Thijssen about the rich imagination of an ordinary boy from Amsterdam at the turn of the century.