My Sisters Kids are working a flea market when they suddenly find an old box that stores an old photo of a man with a beard and gold digger equipment. Their mother explains that it must be their great-grandfather, who emigrated to Canada many years ago to become a gold digger. This excites the children and they immediately start investigating if they still have family in Canada. They manage to get in touch with their great-aunt Anna, who invites them to Canada for a visit. Uncle uses his scholarship to take the kids to Canada, where he wants to test his new educational theories on the children – by letting them live dangerously. As it turns out, there’s a story of an old gold mine and a treasure map. Anna is afraid of going into the gold mine and describes the place as very dangerous. Uncle surprises the children – they are going trekking in the mountains to experience Canada’s unique nature. The story of the gold mine and the treasure map excites Michael and Jan, and they lead the family towards the old mine – without the rest of the family realising their plan. Soon, My Sisters Kids catch the gold fever and search for the treasure, which is apparently still hidden in the mine that has remained untouched for over fifty years after an accident that happened there. On their way to find the mine, they are surprised by the Canadian wilderness, nature, animals and two gold diggers that have also found out about the gold mine and the potential treasure within. The excitement never ends and it’s a tense race to see who finds the treasure first.