Plot: Jeffy is just chilling on the couch, when Cody comes in with his newly invented "A-A-A-Alternate Universe Machine!". It can travel to other universes with different realities. Cody lets Jeffy try the machine, and he goes in. But while Jeffy is travelling, the machine malfunctions, causing a massive space explosion. This releases a bunch of alternate Jeffys into Earth. Cody and Jeffy now have to solve this major problem. Cody then gets two of his new "Disappear Rays", and the pair starts shooting the Jeffy's with it, trying to send them all back to their rightful universes. But before both of them could shoot the last one (2016 Jeffy), he knocks current Jeffy out, and steals a car, storing the body in the back seat. Cody then takes another car, and chases after 2016 Jeffy. Current Jeffy wakes up a little bit later. 2016 Jeffy then rams the car on the side of a road barrier, trying to get rid of Current Jeffy. This shows that 2016 Jeffy was, and is secretly a villian. But if past Jeffy is a villian, then current Jeffy is also a villian. A classic case of being your own worst enemy. Cody tries to shoot 2016 Jeffy with his ray, but accidentally shoots the gas tank, causing both of them to explode. So now since both of them are dead, Cody has to go back in time, and stop all these events from happening. Cody goes back to his house, and grabs his "T-T-T-Time Machine!". He then goes back in time just before past Cody introduces his A-A-A-Alternate Universe Machine!" to Jeffy. He gets to past Cody, and successfully stops him. He then went to the present, and Jeffy was well and alive! So technically, the events never happened, only in an alternate timeline.

SML Idea: Jeffy-Man: Into the Jeffy-verse! [OC]