Charlie and Mac's old high school gym teacher is accused of molestation.

Dennis and Mac make a decision to take away all rules concerning moral and behavioral etiquette at Paddy's after an argument about the Constitution. Frank uses the decision and it's following consequences to his own gain. Meanwhile, Charlie tries to convey his love for America by protesting while Dee attempts to reaffirm her goal of being an actress.

Mac, Dennis and Dee try out for the Philadelphia Eagles. Also interested in becoming an Eagle is Liam and Ryan McPoyle's brother, Doyle.

The McPoyles hold the entire gang hostage at Paddys while Frank is busy searching for his will in the air ducts.

The gang gets a real scare after Dee reveals she's pregnant, forcing the guys to recall their last hazy Halloween party to determine who the father is.

The gang make a disturbing discovery after crashing Maureen's wedding.

When some bad blood with old foes compromises their ideal Thanksgiving, the gang decides to make amends by breaking bread with those they've hurt.

The guys crash Dee's bowling league night and compete in a Battle of the Sexes at a bowling alley owned by the McPoyles. Dee, The Waitress, Artemis, and Gail the Snail versus Dennis, Mac, Charlie, and Frank in a classic match to prove who is better.