Stephanie becomes fearful of Kimmy's pregnancy after having a seeming ominous dream while Danny, Jesse and Joey come home to celebrate their 30-year "Dad-iversary", the first day Jesse and Joey moved into the house. D.J. and Steve are also planning to go on their first date back together but are forced to have a makeshift date inside when the fog prevents them from going to their restaurant.
Though the night appears to be magical for everything, disastrous news begins to spread for everyone as Danny and Becky are replaced by Mario Lopez on Wake Up USA forcing Jesse to become the family's breadwinner since both Danny and Becky are now unemployed, Joey is stuck with his kids for six months, Fernando's favorite root beer is discontinued, Marius breaks up with Ramona, Rocki doesn't consider herself Jackson's girlfriend and upsets him, Pamela puts gum in Tommy's hair, Rose can't be Max's date for the party which ultimately causes Kimmy to reveal the most devastating bad news: That she isn't pregnant with Stephanie and Jimmy's baby since she feels fine compared to how miserable she felt pregnant with Ramona.
- Candace Cameron Bure as D.J. Tanner-Fuller
- Jodie Sweetin as Stephanie Tanner
- Andrea Barber as Kimmy Gibbler
- Soni Nicole Bringas as Ramona Gibbler
- Michael Campion as Jackson Fuller
- Elias Herger as Max Fuller
- Dashiell and Fox Messitt as Tommy Fuller Jr.
- Juan Pablo Di Pace as Fernando Guerrero
- Scott Weinger as Steve Hale
- Dave Coulier as Joey Gladstone
- Bob Saget as Danny Tanner
- John Stamos as Jesse Katsopolis
- Lori Loughlin as Rebecca Katsopolis
- Landry Bender as Roxanne Mahan
| The image gallery for Fullers in a Fog may be viewed here.