Kórinn is a documentary about the choir group Léttsveit Reykjavíkur which tally's up to 120 women. Being in a choir has been a tradition for many Icelanders in many years and here we get the chance so see how and why the choir group works so well together. We get to see positive emotions but also the negative ones. We get to know that friendships, that lasts forever, are created in this group and we also get to know the reason why people are driven to join a bunch of strangers to sing together.