Rick is skeptical of Summer's new job at a shop run by the devil. Jerry and Morty argue about Pluto's status as a planet and end up traveling there.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.