In the episode titled "The Gang Goes on Family Fight," the characters from the show It's Always Sunny in Philadelphia participate in a game show called Family Fight. The gang, consisting of Dennis, Dee, Charlie, Mac, and Frank, competes against another family, showcasing their usual antics and dysfunctional dynamics. Throughout the episode, the gang's lack of teamwork and bizarre answers lead to humorous situations. Their interactions with the host and the opposing family highlight their unique personalities, making for an entertaining and chaotic game show experience.