It's Always Sunny in Philadelphia - Episode 8.07 - 8.08 - Titles and Synopsis

Episode 8.07 – “Charlie Rules the World”
(Airs November 29, 10:00 pm e/p) – After slipping into an unhealthy obsession with computer games, The Gang wrestles to define the difference between the real and the virtual worlds. Written by David Hornsby; directed by Matt Shakman.

Episode 8.08 – “Frank’s Back in Business”
(Airs December 6, 10:00 pm e/p) – With Charlie under his wing, Frank cleans up so he can get his hands dirty and help out his old company with one last big merger. While an unwritten rule of the bar gets the rest of the gang caught up in a case of mistaken identity. Written by Dave Chernin & John Chernin; directed by Richie Keen.

Source: FX