Unna and Nuuk

Unna ja Nuuk is a Finnish family film that debuted in Finland on 20 January 2006. Directed by Saara Cantell, its screenplay was written by Joona Tena and Sami Keski-Vähälä. Unna ja Nuuk stars Rosa Salomaa, Toni Leppe, Esko Salminen, Meri Nenonen, Jenni Banerjee, Tommi Korpela, etc. Much of the film's dialogue is written in a version of the Proto-Finnic language, which was reconstructed by lector Jouko Koivisto.

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