De Bende van Sjako plot
Brothers Jacco (12) and Vin (8) and their friends Samantha (12), Marco (13) and Mo (12) turn out to be descendants of the eighteenth-century Amsterdam thief Sjako and his gang members. In his time, Sjako was a kind of Robin Hood, who built a large fortress under Jacco and Vin's house, where he and his gang could hide. Mysterious regents order a mysterious shadow to test the children to see if they can form Sjako's new gang. Each child is tested on his specific quality.