Jim is outed as a sex addict on live radio and battles his porn addiction at home.

One of Billy's friends with muscular dystrophy dies forcing the realization on the guys that Billy doesn't have much time left. Jim copes by chasing after the dead guy's sister.

When Jim and Steve attend their high school reunion, they find things aren't quite as they remembered. Billy tags along and poses as an able-bodied alumnus.

The van is towed with Billy in it while Walter and Steve go out drinking. Billy's wheelchair is stolen by gang members and Jim and Steve help him get it back.

Jim's parents come to visit and the guys' dads take them to a water park - along with hookers they met at a massage parlor.

To escape his parents, Jim goes to Afghanistan to entertain the troops and comes under heavy fire with Steve. Billy is hospitalized with Jim's mom.

Walter goes missing after walking in on Billy having sex. The boys search for him and discover one of Janice's secrets.

Jim performs a sexual act to get a female executive in Hollywood to help him land roles.

Steve's daughter comes to visit from Cincinnati but a revelation about his ex-wife sends Steve into an out of control bender. His absence forces Jim into the unlikely role of surrogate parent for the weekend.

Janice and Walter stage an intervention to confront Steve's drinking unaware of a coke party Jim has accidentally set in motion in his bedroom.

Jim stops drinking in solidarity with Steve and starts to suffer from panic attacks. Through a misunderstanding, Jim ends up at a married ex-girlfriend's house for a costume party.

Jim deals with the fall out of being shot by a heckler and considers quitting comedy. Billy goes to a video game tournament.