Chocolate grandfather. The secret of the old chest

A completely ordinary family lives in the Norwegian city of Bergen: mom, dad, six -year -old Martin and his older sister Matilda. But everything changes, and life is suddenly filled with fascinating events, when grandfather Oscar comes to visit them, whom the children had never seen before. It was not without reason that Oscars were nicknamed the chocolate grandfather, because he is a terrible sweet and cannot live without sweets and chocolate.
At first, Martin and Matilde in the company of grandfather have to deal with the intrigues of harmful sisters Paulsen, who dreamed of disrupting the annual city fair of sweets. And then they travel in time, get acquainted with the Vikings and look for a stolen chest in which a magical artifact that fulfills desires is stored.
After all, where is the chocolate grandfather, there is always adventure and magic!