After Keen finds Molly tied up at the back of the Bloog Control Center on the space station, she explains to him that she was kidnapped on the orders of her younger brother, who Keen knows to be his nemesis Mortimer McMire. Mortimer convinced the Bloogs to kidnap her by offering them the Stupendous Sandwich of Chungella IV. Keen is surprised, as he thought Mortimer was dead (he was apparently killed at the end of the Vorticon trilogy), and is dismayed to find out that Mortimer plans to blow up the entire universe. This conclusion is also revealed in an encoded note at the end of the Galaxy. The game ends by asking the player to play the next installment, where Keen would again fight Mortimer.
