The Walker family struggles to find cheer in celebrating Kitty's birthday. Sarah fights to salvage what's left of her failing marriage. Kevin learns the hard way about the sacrifices that true love brings.
Kevin, Kitty and Nora take a road trip to pick up Justin as Kitty balances personal and political issues with her future husband. Meanwhile, Tommy can't seem to get fatherhood right, and the truth finally comes out between Sarah and Rebecca.
Nora and Rebecca hatch a plan to help Justin cope with pain, while Julia tells Tommy she needs to take some time away with their infant daughter. Meanwhile, Kevin and Scotty Wandell share an impromptu dinner, and Kitty confronts Robert's ex-wife.
With Nora along for the ride, Kitty and Sarah's attempt at a spa escape quickly becomes a mess. Tommy crosses a dangerous line in search of companionship. Rebecca grows concerned with Justin's impossibly speedy recovery, and Kevin presses Saul to make a confession about his past.
Sarah faces the most difficult obstacle of her life when Joe puts up a tough custody battle. Meanwhile, Kitty drops a Halloween bombshell that will alter the future of the Walker family - she's pregnant.
The Walkers suffer a very tragic, private loss - the loss of Kitty's baby. Kitty brings in an expert to advise Robert on his campaign. Sarah is forced to reevaluate her custody agreement.
The Walker family pulls together for better or worse when Justin reaches a critical new low point with his addiction. Kitty and Robert move toward their future together with a renewed perspective.
Robert enlists the help of a musical icon to fend off Kitty's bout with cold feet. Nora reconnects with a man from her past and Sarah has mixed emotions about agreeing to have dinner with a new business consultant. Meanwhile, Tommy is overwhelmed by guilt when Julia and Lizzie return home, and Justin pursues a new romance with someone with questionable intentions.
A political scandal and a severe case of cold feet threaten Kitty and Robert's highly anticipated wedding day. Meanwhile, Isaac distracts Nora from her romance with Stan and Holly gets a surprise visit from an old friend.
Thomas and Julia struggle to repair their damaged marriage while Rebecca's connection with David raises some questions about her mother's past. Meanwhile, Nora and Isaac have a very uncomfortable first date, and Graham helps Sarah regain some of her confidence with the opposite sex.
A surprise visit from Jason forces Kevin to rethink his future and his romantic life, while Nora and Isaac grow more content in each other's company.
Nora discovers that Isaac is not the man she had hoped he was, and Graham helps Sarah gain some closure. Meanwhile, Robert and Jason have a long overdue confrontation.
Kitty and Robert make a life altering decision when the Presidential race takes a dramatic turn. Meanwhile, the Walker siblings are shocked by Nora's reaction to a surprise proposal from Isaac, and Rebecca further investigates the identity of her father.
Robert seriously contemplates a future in politics. Kitty's fertility treatments become increasingly more aggressive. Kevin has an epiphany about his relationship with Scotty. Rebecca reveals information about her paternity test. Meanwhile, contrary to Sarah's direction, Saul makes a very risky business move that could affect the future of Ojai Foods.
In a surprising twist of fate for the Walkers, Holly becomes the only saving grace for Ojai Foods after a major international business deal goes bad. Meanwhile, Justin delivers some heartbreaking news about a family member, Saul makes a stunning confession and Kevin and Scotty share a life-changing moment.
Kevin and Scotty make a commitment to be life partners. Saul finally deals with his identity in a public way. The family discovers that William kept yet another painful secret from his family.