Three couples at different parts of life navigate big turning points in their lives over the holidays.
| Actor | Role |
|---|---|
 Catherine BellRegina Johnston | Regina Johnston |
 Jonathan BennettMike Harrelson | Mike Harrelson |
 John BrothertonJohn Hamilton | John Hamilton |
 Erin CahillLizzie Hamilton | Lizzie Hamilton |
 James DentonNelson King | Nelson King |
 Vincent Rodriguez IIIZian Harrelson | Zian Harrelson |
 Lynda BoydEvelyn Sawyer | Evelyn Sawyer |
 Fred HendersonFrank Sawyer | Frank Sawyer |
 Brandi AlexanderDaisy Guerrerra | Daisy Guerrerra |
 Robert MoloneyQuinn Lewis | Quinn Lewis |
| MMatthias FalvaiConrad | Conrad |
 Veronica LongWinnie | Winnie |
 James KotBrett Sawyer | Brett Sawyer |
 Katharine IsabelleOlivia Sawyer | Olivia Sawyer |
 Ezra WilsonPeter Sawyer | Peter Sawyer |
 Amanda KhanAnn Porter | Ann Porter |
 Darby SteevesVicky Baker | Vicky Baker |
 Julian HaigSteve Baker | Steve Baker |
 Garrett BlackGreg Johnston | Greg Johnston |
 Eva TavaresIvy | Ivy |
| SSimon FarrellHector | Hector |
| AAshton LimSam | Sam |
| MMilana WanTina | Tina |