The gang has returned for another season, and nothing has changed, except that Mac is back to normal weight. Again the guys are faced with a dilemma which for a normal person represents a time for reflection, but for them an opportunity for self-serving schemes and hopes for a quick profit.
Dennis and Dee's grand-father "Pop-Pop" is lying in the hospital, and their lawyer is hoping that they would take the old man of his life support. Dennis and Dee aren't ready for this until they've seen something else die first, and embark on a mission to find something to kill. In the meantime Charlie, Mac and Frank become convinced that Pop-Pop has in his possession a Nazi treasure, because obviously, Pop-Pop was a Nazi.
This episode showed again how selfish the gang is. Every chance they get, they try to backstab someone, get someone else to do their dirty work, help someone only if it benefits themselves, and consider the consequences of their actions only for one minute forward. This is It's Always Sunny in Philadelphia at its best.