When Baby bounces against a wall, he gets a mysterious bump that morphs into a majestic golden horn. It turns out that the horn is the sign of the prophesied leader of the dinosaurs, so Baby becomes their king.
Fran thinks that the family spends far too much time in front of the TV. So when a freak accident destroys it, she sees it as a blessing - but Earl is looking for another way out and enters the family in a TV game show.
Charlene notices that the other females are getting their tails before her. So while Fran tries to teach her that a beautiful body doesn't make a beautiful mind, Charlene thinks of quick fixes and the males in the house tease.
It's Fran and Earl's twentieth anniversary. To make it very special, Earl buys a delicacy for dinner: A species called grapdelites which are nearly extinct. Robbie fights to save their species.
To drive up employee morale, Mr. Richfield decides to create an idiot example of perfection and call him the "Employee of the Month". And who should make the grade but Earl?
Fran and Earl go out to dinner, leaving Robbie and Charlene alone to watch Baby. However, that's the perfect opportunity for a group of oppressed food items to revolt by kidnapping the youths.
Robbie goes to see the Job Wizard who dictates what careers everybody has for the rest of their lives. He hopes to be picked to be a rock legend but his dream falls flat when it's announced he's going to be a tree pusher like his father.
After meeting new neighbor Monica, Fran learns that dinosaurs have to renew their marriage licenses after a certain amount of time - and then realizes that her marriage to Earl is technically invalid.
Robbie realizes he has no idea how to talk to girls. Desperate, he asks for help from Spike, a troublemaker who does very well with the ladies. Unfortunately, Spike's advice causes more harm for Robbie than good.
After Fran realizes she switched nests with another mother, she starts to think that Baby isn't their baby. When she meets the Molehill baby, she realizes that he looks just like Earl. The two families try a baby swap.
Monica gets a job pushing down trees for Wesayso but is fired after refusing the advances of a male co-worker. Determined not to let the males in the workforce hold her down, she takes the matter to court.
Fran watches a TV show where the host takes calls from troubled dinosaurs but doesn't offer to help them. When she suggests to the host he advise his callers about their problems, the producers make Fran the new host of the show.
Robbie designs a science project that if executed in real life, could naturally power dinosaurs' houses and lower their heating bills. This proves to be bad business and Richfield is out to ruin Robbie's image to the public.
An important lesson is learned by all when Robbie brings home a mysterious happy plant which makes everyone feel all groovy-like. As things spiral out of control, Fran finally has to put her foot down.
When Ethyl dies, she goes to the afterlife and finds out how beautiful it is. But she is only unconscious and wakes up again. Anxious to soon return to the afterlife, Ethyl goes on TV and tells the viewers how wonderful it is.
A news bulletin announces a nationwide shortage of pistachio nuts, which is blamed on the four legged dinosaurs. War breaks out between the two-leggers and four-leggers and Robbie and Spike are drafted into the battle.
Earl and Roy impersonate USO girls and go with Charlene to the front to find out what's happened to Robbie. Earl returns home without his son and he and Fran are moved to panic when the news report one a soldier who was killed in battle.
After the Chief Elder dies, Richfield runs for new Chief Elder. His picks Earl for his opponent to beat. Earl is fine with that until he realizes it would be in everybody's best interest not to let Richfield become ruler.
Charlene thinks having an expensive coat will make it easier for her to fit in with the popular girls. But once she acquires it, she alienates herself from her friends and turning against her family.
Robbie is fed up with being beaten up by a wild pack. So Spike introduces Robbie to his gang, the Scavengers. Robbie finds himself in more trouble when after a night of drinking with them, it seems he's eaten their leader.
Wesayso attempts to present a positive company image with the perfect family, the "Wesayso Family". However, the company decides that it would be better if Roy becomes the head of the Sinclair household, and Earl moves out.
