The Thores are left heartbroken by the passing of their matriarch, Babs. With Glenn forced to navigate life without his wife, Whitney takes on the role of caring for her aging father and moves him into her home.

While the family reels from the death of Babs, their beloved matriarch, a secret, long-lost daughter from Glenn's past emerges; determined to help her dad move forward, Whitney plans a Babs-themed party with friends and family to celebrate her life.

Determined to lift her grieving father's mood, Whitney cheers him on as he pursues an item on his geriatric bucket list: milking a cow; Glenn is far more nervous about talking to his long-lost daughter for the first time.

Whitney wants to participate in her dad's bucket list, but indoor skydiving has a weight limit. Glenn prefers to have his feet on the ground as he tries to build a dollhouse for his new great-granddaughter. Whitney gets Jessica outside her comfort zone.

The Thores prepare to embark on the biggest adventure of their lives: meeting their new family; with the trip looming, Glenn worries he may not finish a surprise gift for his new great-granddaughter.

Anxiety reaches an all-time high as the Thores arrive in Alabama to meet Angie, Glenn's long-lost daughter; when Whitney starts a friendly competition with her niece and nephews, Glenn worries Whitney's competitive nature will be too much for them.

Whitney throws caution to the wind and plans a party for her 39th birthday, but there are hurricanes on the horizon; before she becomes a spinster, Whitney agrees to a blind date; meeting with Jessica and Lennie, Whitney makes a shocking discovery.

Whitney's search for Mr. Right seems bleaker than ever, and she fears being alone forever; after finding her father grief-stricken at the cemetery, Whitney and Hunter present travel destinations to Glenn for his big bucket list trip.

The Thore family competitions continue as Whitney welcomes Angie and Jaime to North Carolina, but the bonding may go too far with matching tattoos. Glenn extends an invitation to Switzerland for his new family despite their inexperience with traveling.

Emotions run high as Whitney gets Glenn, Hunter and her new family ready for their Swiss family vacation; on Whitney's to-do list is a virtual date, finally getting her braces removed and taking Glenn to the eye doctor.

Still reeling from the fight with her dad, Whitney balances on an emotional tightrope during their family vacation, but a surprise invitation from Jaime might turn things around; Glenn makes a decision that could cause an irreparable family rift.

The Swiss family adventure continues until a terrifying turn of events leaves them stranded in the Alps, where a helicopter rescue mission may be their only hope; the shocking reveal of a new family secret sends Whitney into a spiral.