Reunion

Reunion is a 2015 Finnish comedy film directed by Taneli Mustonen. It's the story of three men, Antti, Niklas and Tuomas, traveling back to their old hometown to attend a high school class party, with the goal of realizing a wild weekend of freedom and fun. The film is starring by Sami Hedberg, Aku Hirviniemi and Jaajo Linnonmaa. The film is a Finnish remake of the 2011 Danish comedy film Klassefesten.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.