En route, Jerry finds the road blocked by the chaos created by the mantis-people; when they attempt to force Morty's whereabouts out of him, he escapes and kills them with a shotgun.
This serum, amalgamated from various DNA sources, does end the world population's desire for Morty but also mutates them into barely humanoid blobs.
Rick and Morty enter the new reality (Dimension C-131[2]), bury their alternate selves in the backyard and quietly assume their place.
The episode ends with Morty visibly traumatized by the transpired events and his counterpart's gruesome death, set to the song "Look on Down from the Bridge" by Mazzy Star.
In a post-credits scene, Jerry, Beth, and Summer are the sole unmutated humans left in the ruined Cronenberg-infested world.
He appreciated the relationship dynamics in this episode and said that it did a great job in combining high-concept scientific theory with their extremely dark humour.
[7] Justin Roiland has called this his favorite episode of the first half of the first season, both because he thought it was paced well, and due to the fact that he loved how insane it got in the end.