In 1468 the sailing ship Hanneke Wrome was involved in a maritime accident. The ship sinks with 200 people and a precious cargo of gold. The fate of Axel Tott, the son of the mayor of Raseborg, who traveled by ship, has remained a mystery to this day. In the summer of 2016, four young people will be tasked with finding out what happened to Axel and where the treasure is.