What is the basic idea that the king comes up with to steal all the money? CH 24-28

The two men agree to pretend to be Peter Wilks's brothers from Sheffield, England. They want to steal Peter Wilks's inheritance from his rightful family. Together, with Huck acting as a servant, they get a steamboat to take them to the town and drop them off. Their ploy works perfectly and when they hear that Peter is dead, both men put up a huge cry and lament. Huck remarks that, "It was enough to make a body ashamed of the human race."