In the Season 4 finale, Honey plans a relaxing vacation before the baby comes, but Jessica turns the trip into a crazy quest to get Stephen King's endorsement for her novel. When Grandma Huang decides to move out, Louis panics and does everything he can to make sure she knows how welcome she is. Meanwhile, Eddie, Nicole and their friends plan to wear matching suits to the school dance until a dress code demands that the girls must wear dresses, leading Eddie and Nicole to rebel.
After Louis buys Kenny Rogers' stake in Cattleman's Ranch back, he starts to doubt his instincts as sole owner. Frustrated by his cautiousness, Jessica flies in Madam Xing to ease Louis' anxiety, but she stresses him out—to the point of breaking a tooth. Marvin's laughing gas finally helps Louis relax, but side effects of strange visions accompany his relief. Meanwhile, Evan gives up watching Regis and Kathie Lee for Lent, leading his older brothers to mess with his head.
The Huangs are pleasantly surprised to find that Eddie has been awarded a spot in the Honor Society, but Evan is particularly bothered by the news. Meanwhile, Jessica receives a note from her book editor to improve her cop dialogue and signs up for a ride-along to better her writing. Then, on St. Patrick's Day, Matthew Chestnut doesn't have the luck of the Irish on his side when Louis receives orders from Kenny Rogers to fire him.
For Chinese New Year, the Huangs play a game where they can only speak in Mandarin, which quickly turns into a tense competition between Jessica and Evan, putting Jessica's first televised interview for her novel in jeopardy. Emery is excited to end his year of bad luck and finally ask his crush to the spring fling, but when he is still having trouble, Louis decides to take matters into his own hands. Meanwhile, Eddie doesn't receive a red envelope from Big Auntie.
Jessica pushes Evan to win Student of the Month so that she can rub it in her new frenemy's face, Amy Chestnut. When Evan becomes overwhelmed, he starts seeing the school counselor, much to Jessica's chagrin. Louis feels like he is in Kenny Rogers' shadow and needs a way to put his name back on the Cattleman's Ranch map. Eddie and Emery decide it's time they learn how to unhook a bra.
When Michelle Kwan comes in second place at the Olympics, Jessica tries to keep it from Emery and Evan, only to get caught up in an elaborate conspiracy theory that leads them seeking answers from Nancy Kerrigan. Meanwhile, Louis changes Eddie's bedtime to spend more quality time together watching Letterman, but feels slighted when Eddie spends his newfound free time elsewhere.
With Jessica's career as an author taking off, Louis worries that she is losing interest in him and attempts to rekindle the flame under Marvin's guidance. Evan skips his way into Emery's seventh grade English class with a particularly hard-to-please teacher, Ms. Doris. When neither can win her over, they seek advice from an unusual source.
Eddie gets annoyed when he catches Nicole changing her opinions in order to impress her new crush, Jackie. Louis is eager to expand his social circle with Matthew Chestnut's friends, but Jessica fears her husband is overextending himself. When Emery and Evan take Honey shopping to find her a new, easy style to help her when the baby comes, their idea of a "mom" wardrobe is met with some resistance.
Honey is excited to attend a parenting class that encourages moms to listen to their babies taught by self-proclaimed child sage, Wilhelmina Page, but when her mother, Anne, ridicules the idea, it exposes communication issues of their own. When Honey turns to Jessica for support, she is disappointed to find that even her best friend doesn't have her back. Meanwhile, Louis and Marvin are thrilled when they get to go on the free cruise their wives won on "Wheel of Fortune."
As head of the HOA Christmas committee, Jessica threatens to cut the neighborhood caroling this year due to last year's rocky performance. Meanwhile, Marvin becomes suspicious of Honey when she goes to see "Titanic" at the movies without him; and Nicole develops her first girl crush.
When the gang signs up for different hobbies that Eddie deems as lame, he begins to think he needs to find cooler friends in order to make his mark in high school. Jessica receives money to have her photograph professionally taken for her book, but in true Jessica fashion, she decides to pocket the money and have Honey take the photo for free. It doesn't take long to realize that no one can meet her picture-perfect standards.
Louis gets himself into a sticky situation when he lies to Jessica and tells her that he loves her newly finished horror novel. With news that Kenny Rogers is paying a visit to Cattleman's Ranch, Jessica insists that Louis give him a copy of her book for his agent, making him extremely uncomfortable. Eddie and his friends purchase a 300-disc CD carousel to play all of their music, but Eddie thinks he's the only one in charge and becomes a tyrant.
The Huangs' idea to skip Thanksgiving doesn't last long when Louis plays matchmaker and invites Grandma's ESL teacher after he notices their flirtation in class. Meanwhile, Evan lets Eddie and Emery sneak him into his first R-rated movie.
Nicole fears disappointment from Marvin, so she struggles with coming out of the closet to him. Meanwhile, Louis wants to manage the Cattleman's Ranch softball team on his own, so Jessica coaches a rival team to prove that she's the superior manager.
Jessica's aunt passes away, so the Huang family head to Houston, where the boys see Jessica's dad for the first time. This prompts Louis to push Jessica and her father closer together; and Evan decides to make Eddie the executor of his will.
Halloween arrives and Louis is disappointed when Evan doesn't take childish delight in the holiday. Meanwhile, Eddie plots to crash a cool older girl's party; and Jessica and Emery are spooked when they hear a strange man's voice in Grandma's room.
Honey and Marvin want a baby, which upsets the Huangs, who want to spend more time with their pals now that Eddie is mature enough to be left on his own. So Louis and Jessica do their best to dissuade Honey and Marvin from welcoming a new addition.
Eddie tries out for football, despite being forbidden to by Jessica. Elsewhere, Emery finds out that Evan skipped a grade and is now in middle school with him; and Louis battles with Kenny Rogers' right-hand man over changes at the steak house.
In the fourth-season opener, the Huangs move in with Honey and Marvin. Meanwhile, Jessica gets to compete on "Wheel of Fortune"; Eddie starts high school; and Michael Bolton offers to help out at the restaurant to give Louis more time with his family.