Kenny gets jealous when Will and Grant strike up an unlikely "bromance." Things go from bad to worse when he finds out Grant is coming to the weekly Keen Sunday dinner. In an attempt to strike some common ground, the guys try a "Star Wars" screening, a film Kenny is obsessed with, but Grant has never seen.
When Kenny admits he hasn't had a date since his divorce from Brenda -- and that Brenda is the only woman he has ever slept with -- the guys, including Grant, take him clubbing to jump start his love life. But things don't go as planned, especially when a friend of Theresa's sees Will and thinks he's stepping out on his wife.
After they find out that Nathan's allergic, the whole family goes on a gluten free diet, which leads to a weird competition between Will and Theresa to see who can keep the diet up longer, and for Brenda, who's trying to convince health-conscious Grant she can live without it. Problem is, they're all cheating. Meanwhile, it's all fast food, all the time for Craig and Kenny as they romance two ladies who work at Big Burger.
Will installs a new home security system, but instead of making everyone feel safer, the system keeps tripping and wreaks havoc in all their lives. Meanwhile Craig reconnects with Lisa, the girl whose wedding he broke up; and Grant convinces Kenny to play a "trust the universe" game with him with his new GPS, letting the GPS randomly select their destination: Kenny is convinced it will eventually lead to disaster, but instead he and Grant end up on a series of wild adventures, which eventually finds Kenny meeting his "Star Wars" hero, Billy Dee Williams.