Fenimore Fillmore's Revenge is a classic point and click adventure game in a full 3D environment. It is the third in the Fenimore Fillmore franchise, after 3 Skulls of the Toltecs and The Westerner.

The mechanics in the game are quite different from the previous games. The player is thrown into a series of "levels" where he (taking part as Fenimore or Rhiannon) will have to solve a few puzzles in order to get to the next level. Also a few action scenes are present in the form of small shooting sequences.

In this episode, Fenimore and Rhiannon find a dying man in the middle of the desert, who tells them of the whereabouts of a treasure from a recent theft hidden inside a tomb, just before passing out.

Just after that a gang of outlaws lay an ambush on them, kidnapping Rhiannon. Our objective will be not only to rescue the poor girl and getting hold of the treasure, but also to pay vengeance on the villains.