When Mayor West's nativity scene is ruined, Brian is seen as the prime suspect.
When the family fails to help Lois with the Christmas shopping, she walks out on the family and the Griffins try to save Christmas on their own.
Meg has a response after she takes Stewie to the mall to meet Santa; Brian must help Stewie process the experience.
Brian meets and falls in love with Jess, who reveals she has cancer; after she receives devastating news regarding her diagnosis, Brian proposes marriage to her.
Brian's marriage to Jess is not what he envisioned; at Peter's suggestion, Brian lets himself go, causing Jess to make a surprising decision.
After Brian teases Stewie for being small, Stewie invents a shrinking machine that results in both of them shrinking to a microscopic size.
Lois receives a surprising birthday present from her father, which leads to an unfortunate accident that leaves him dependent on Lois and the Griffins' care.
After Meg saves Stewie from a choking incident, Stewie makes it his personal mission to create a better life for Meg; Chris is sent to a vocational school.
To the surprise of all the Griffins, Meg makes the U.S. Olympic team as a biathlete and competes in the Winter Olympics.
Stewie and Brian compete for the inheritance of a wealthy, older heiress; Peter and Chris battle for Mr. Herbert's affection.
The brewery's new bosses decide to change the company's mascot; in an attempt to be crowned the new face of Pawtucket Ale, Peter and Brian go head-to-head.
After Peter's hair turns white from a ghost-hunting adventure, his new look grabs the attention of a local news anchor; Brian and Stewie attempt to help Chris improve his dating game.
Peter's new job as the White House press secretary sees the Griffins move to Washington, but things soon come to a head between Peter and President Trump.
Peter is mistakenly identified as transgender, which leads to an unexpected event and him learning an important lesson.
A selfish Peter loses his Christmas spirit and is visited by ghosts of Christmas past, present, and future.
Peter gets power hungry when he's asked to fill in for a mall Santa; Stewie and Brian decide to crash holiday office parties for free food, fun and women.
The guys decide to form a string quartet, but Peter doesn't make the cut; Brian is forced to be Carter's seeing eye dog.
Peter helps Joe with several crime cases but gets angry when Joe tries to take all of the credit; Brian convinces Stewie to join a football team and panics when he gets a concussion.
Peter opens up his own food truck business in an attempt to avoid the healthy food Lois forces him to eat; Meg joins a roller derby team, despite Chris thinking it's too dangerous.
When Peter runs into Jesus at the mall and learns he's still a virgin, he enlists Quagmire and Cleveland to help get him a woman.
Peter fills Lois' dad with holiday spirit; Stewie tries to get the only thing he wants for Christmas.
After getting the brush-off from Santa at the mall, Brian and Stewie travel to the North Pole to teach Santa a lesson.