Greg joins Colleen's gym and goes overboard gearing up to work out. Also, Heather and Jen host a secret garage sale that directly competes with one Joan is having, Tyler and Samantha throw a party while Heather and Tim are away for the weekend, and the family has second thoughts about eating lobster for dinner.
- Colin Hanks as Greg Short
- Betsy Brandt as Heather (Short) Hughes
- Thomas Sadoski as Matthew "Matt" Short
- Zoe Lister-Jones as Jennifer "Jen" Collins-Short
- Dan Bakkeddahl as Dr. Timothy "Tim" Hughes, M.D.
- Angelique Cabral as Colleen Brandon Ortega
- Niall Cunningham as Tyler Hughes
- Holly Barrett as Samantha "Sam" Hughes
- Giselle Eisenberg as Sophia Hughes
- James Brolin as John Bertram Short
- Dianne Wiest as Dr. Joan (Pirkle) Short
- Patrick Brammall as Clinton
- Hunter King as Clementine
- Judilin Bosita as Edie
- Bryan Coffee as Jody