The tenth season of It's Always Sunny in Philadelphia, premiered on FXX on January 14, 2015. This season consisted of 10 episodes, and concluded airing on March 18, 2015.
Mac oversees the gang while they compete to break Wade Boggs’ legendary beer drinking record.
The gang gets into the online dating scene to expand their matchmaking potential.
When Psycho Pete, long lost member of the freight train, is released from the mental hospital, Dennis and Dee rush to get him recommitted while Charlie and Mac attempt to restore him to his former hard-partying form.
Charlie goes into overdrive when he's notified that the health inspector will be arriving that day. Meanwhile, the rest of the gang is trying to exploit a flaw in the air-miles reward system. Written by David Hornsby; directed by Matt Shakman.
Dennis and Mac enlist Dee to spy on the fish factory across the street, Charlie and Frank grow suspicious and decide to do some spying of their own. Written by David Hornsby; directed by Matt Shakman.
The group separates from one another to find out who they are as individuals after another failed endeavor.
News surfaces about Mac's Dad, Luther, being a murder suspect. Mac goes into full "P.I." mode to clear his father of any wrong doing.
When the gang appears on a nationally broadcasted game show, Dennis does his best to keep the gang’s weirdness under wraps.
Frank decides to retire; the foursome begin to plot and plan ways for each of them to take control of the bar.
"Asskickers" isn't just a hot new way to work out; it's a way of life...and maybe a cult.