Meanwhile, the Gang ups its efforts on the scheming front: first trying to get their neighbor to leave, then attempting to extort welfare from the state. When that doesn't work, they attempt to rig a fight club, exploit a water stain of the Virgin Mary in the Paddy's office and later to extort bribes in exchange for running for office.
Finally, the Gang converts Paddy's Pub into yet another highly successful specialty bar: an unregulated bar that caters to drug abusers and gamblers.
Dennis and Dee's father Frank abruptly appears, causing Dennis to accidentally run Charlie over with his car. After seeing Charlie get attention from strippers over being in a wheelchair, the gang decides to feign disabilities in order to garner sympathy from others.
Dennis and Dee quit their jobs to pursue their dreams, but get hooked on crack cocaine so they can apply for welfare. Meanwhile, Frank hires two new workers under the "Work for Welfare" program and Charlie and Mac go on a spending spree with the money in Frank's secret bank account.
Charlie is outraged over Dennis smoking in the bar, and teams up with Dee to start an anti-smoking rally. Meanwhile, Mac, Dennis, and Frank turn Paddy's Pub into an "anything goes" bar... which goes horribly awry.
After "Starved" was cancelled in October of 2005, John Landgraf have proposed to Sunny's creators an 10:00 PM time-slot - but only if they will able to sign a BIG NAME for the show. Landgraf is a really good friend with Danny DeVito, so he was calling him with this proposition. Later, Rob have come over to Danny to find out what he's already fan of the series (thanks for his kids). Well, that's the story.
This is Danny DeVito's first season as a cast member. Due to other committments he had at the time, he was only available for 20 days of filming, meaning that every scene that Frank was going to be in for the entire season had to be shot before any others. This is a highly unusual situation for a TV series: typically, production takes place on one episode at a time, and production on the next episode does not begin until that episode is completed. It led to a situation where scripts for all 10 episodes had to be ready to be shot by the time production began, and continuity nightmares, since weeks could pass between when scenes meant to be in the same episode were actually shot.
Starting with the second epsiode of the season, "The Gang Goes Jihad", the order in which the titles had been shown at the beginning of each episode was reversed, so that the title of the episode comes before the name of the series. Previously, the name of the series had been shown and then the title of the epsiode (for example, "It's Always Sunny In Philadelphia" and then "Charlie Has Cancer"). This change allows the title of the episode to serve as the punchline to a joke set up by the show's opening (the first time this was done being the episode "Dennis and Dee Go On Welfare").
This promo was mocking NBC's world famous sitcom "Friends" (two years before, Danny DeVito was a guest star on that show).