Tom Johnson is young professional music director from Antwerp who prefers working with amateur choirs. During six months, he takes the Kruishoutem choir under his musical wings. A choir that has had the same director for 25 years and is starting to dilute. They’re quite commendable, but Tom believes they’re capable of greater things. Much greater things. But to achieve that, they’ll have to work hard. In koor follows the process – by trial and error – but also looks into the lives of the choir members and their director.