in a warbot factory on planet quartu, a defective but intelligent robot escapes and crash-lands on veldin, the homeworld of the mechanic ratchet (mikey kelley) (a feline-like humanoid known as a lombax). after being repaired, the robot, nicknamed "clank" (david kaye), reveals that he is on a mission to stop chairman drek (kevin michael richardson), a corrupt blargian business tycoon who harvests inhabited planets to create a new one for his race, the blarg, due to theirs having been overpopulated and severely polluted. however, by doing so, the selected planets are destroyed in the process. joining forces, the two take out several of drek's operations one-by-one while gathering gradual information on his plans. this move enrages drek, who launches a manhunt for the duo.