Bjørnar Lysfoss Hagesveen

Three friends - Julie, Mette and Naisha - are enjoying the first snow in the village. They have snowball fights with the boys and look forward to Christmas. One day Naisha suddenly disappears. With a secret address written in invisible ink as their only clue, they sneak onto the night train to the city. They need to find Naisha before the police do.

The curious Nora, Simen and Lars decide to start the hunt for the sacred Olav shrine in or around the medieval church Nidaros Dome, which has been gone for hundred of years. But they are not the only ones interested in finding the treasure.

An ancient legend of a Viking treasure trove is the starting point for the first season of the suspense series TRIO. Despite the fact that countless treasure hunters have disappeared whilst attempting to track down the so-called Odin's Gold, the three friends Nora, Lars and Simen set out on a thrilling adventure around the mountain village of Skjåk. Their perseverance, ingenuity and physical prowess make up for their youth, and in addition they have a tool their predecessors didn't have, namely state-of-the-art computer technology. Lars, who is wheelchair-bound following an accident, has acquired an extensive knowledge of computers and hacking, and this puts the trio at an advantage in the treasure hunt.