Four twentysomething friends run a struggling Irish pub in Philadelphia. In this episode, Mac and Dennis reach a new low when they pretend to be acquainted with a patron found dead in their bar in order to get closer to his granddaughter. Meanwhile, Dee visits her bedridden grandfather, and Charlie comes along for support.
The guys buy a gun after the bar is robbed, and Charlie uses it to intimidate his nagging landlord. Meanwhile, Dennis and Mac vow to catch the thief, and Dee feigns interest in guns to win over a crush.
The gang opens the pub's doors to underage patrons to increase the establishment's profits. Later, Dennis, Charlie and Dee are asked to the prom. Trey: Robert Adamson. Sara: Katie Chonacas. Tammy: Jaimie Alexander.
One of Charlie's old girlfriends (Heather Donahue) claims her 10-year-old son is his. Meanwhile, Mac tries to impress a cute pro-life supporter (Autumn Reeser) by feigning interest in her cause; and Dennis attempts to pick up women at an abortion rally. Tommy: Spenser Daniel.
The pub becomes an overnight success when the gang accidentally turns it into a gay bar. Elsewhere, Charlie (Charlie Day) tries to prove to a crush that he's not racist after she catches him making an off-color comment. Mac: Rob McElhenney. Dennis: Glenn Howerton. Sweet Dee: Kaitlin Olson.