The episode likely being referred to is , which deals with themes of wealth, financial gain, and "millions" in the context of the 2008 economic crisis. Episode Overview: "The Great Recession"
While Frank attempts to handle a massive financial loss by "getting weird," Mac and Dennis attempt to secure their own financial future through a series of misguided economic schemes. [S5E21] Mac's Millions
The provided episode title, does not correspond to an actual episode of It's Always Sunny in Philadelphia . In reality, Season 5 of the series consists of only 12 episodes. The episode likely being referred to is ,
It's Always Sunny in Philadelphia (TV Series 2005– ) - IMDb In reality, Season 5 of the series consists
For fans looking to watch this specific season, it is helpful to note that It's Always Sunny in Philadelphia seasons typically range from 8 to 15 episodes. You can verify the full list of available episodes on IMDb or the Always Sunny Wiki .