This episode begins with Flapjack and K'nuckles playing in puddles. Then a kid named Lord Tittering appears saying that they are poor. He explains the two that his family is so rich, they throw diamonds in the sewer, just for fun. Flapjack and K'nuckles begin their search. They tease and haunt the rich people and the rich people are not happy as they believe that stormalong is now haunted by ghosts until Lolly Poopdeck comes up with an idea to stop the "ghosts". Flapjack and K'nuckles split up to search for the diamonds. Soon the Constable reaches Flapjack and tells him what they were doing to the rich people. It proves that the diamonds were really rock salt. The Dock Hag soon appears and takes Lawrence with her because it turns out he is her nephew who really is poor all along and has plotted to take revenge against The Dock Hag because of the unfair chores by deliberately throwing the rocksalts into the sewers. Flapjack and K'nuckles notice that Lord Tittering was a lie. They got arrested and never did bother the rich people again.
We see K'nuckles' Father in this episode, before he was turned into a seagull.
Diamonds in the Stuff was a refernce to the title, Diamonds in the Stiff.
The Rich kids father from ''Whos Mooching Who?'' appears has a cameo appearance in the episode.
When the police officer is holding flapjack with the hook, K'nuckles' nose is blue instead of orange.In the next scene, it is orange again.