A divorced dad at Paige's school piques Sarah's interest, while Justin uncovers the key to his learning challenges. Meanwhile, Nora reunites with her eyes wide open.

Sarah has a new romantic interest for the first time since her divorce; Scotty and Kevin await the results of their first try at surrogacy; Kitty and Robert reach another impasse over politics.

Robert and Nora get to work as guest chefs in Scotty's struggling restaurant to boost business, Kitty puts her idea to run for Robert's senate seat up for a Walker family vote, and Sarah reaches a point of frustration with Roy but is quickly rewarded for speaking up.

The Walker family shares love and loss on Valentine's Day as Sarah rediscovers the love of her life, Kitty makes a grand but heartfelt entree in to politics with her family and new campaign manager by her side, Justin and Rebecca face the struggles of impending parenthood and Holly makes a tough decision about what to do with her shares of Ojai.

In an effort to get to the root of the secret that William's nemesis, Dennis York, holds over their heads, the Walkers recall their memories, both good and horrifying, of their family's days at Ojai Foods in 1986. Then, as they continue to flashback to their younger days, they finally recall the shocking secret and the shameful cover-up that led to York's power play, and are forced to deal with the remorse of a tragic event. Meanwhile, Nora and Holly take an uncharacteristic trip, a la "Thelma & Louise," to search for answers about Ojai's hidden worth, and Justin and Rebecca finally get their happily ever after.

The Walkers seem to all being going through an adjustment period, as Cooper acts out against Sarah while Luc becomes a member of the family, Justin has trouble finding the same passion for medicine that he had while serving in Iraq, and Kevin struggles with his newfound unemployed status.

As the Walkers try to cope with the sadness and financial ruin that lingers as a result of the closure of Ojai Foods, they discover a small ray of hope in one of William Walker’s many secret investments. Meanwhile, Robert’s health and the safety of his family are compromised when he finds himself in way over his head in a subversive business deal, and newlyweds Justin and Rebecca consider a trial separation.