Kitty has a secret that could ruin her family. Nora and Holly plan an engagement party for Justin and and Rebecca. While Sarah searches for a new business venture in France.

As Robert worries about news of his recent heart attack leaking to the press, Kitty struggles with an untold secret that will deeply affect their marriage and bring the Walker family together like never before. Meanwhile, Kevin and Scotty discuss the real possibility and challenge of surrogacy.

Kitty, Robert and Nora struggle to accept Kitty's cancer and to come to an agreement on the best possible treatment, but as they prepare to share the news with the entire family, a surprise visitor from afar makes the burden a bit easier to bear.

After returning from France, Sarah manages to distract Kitty through her chemo treatments by using tales of her romance with a French artist. Meanwhile, Justin has problems with his anatomy class and seeks his professor for help with surviving the semester with his teenage genius lab partner.

The Walker family, with the exception of Nora, are surprised by the charms and tango lessongs of Luc Laurent, Sarah's new lover. However, Nora quickly uncovers that her French houseguest is a very good comfort during a very difficult time. Meanwhile, Robert needs to distract Kitty from the cancer, and he uses his most romantic efforts into the situation.

Kitty is thrilled when she finds out a surprise visitor is coming to the town, while Sarah struggles with the idea of telling her children about Luc. Meanwhile, Holly receives the help of Ryan and Rebecca in hopes of finding a way to keep her financial future from collapsing, and Kevin and Scotty finally agree on a surrogate.

Facing the ramifications of her cancer treatment, Kitty is devastated, while Nora makes an unexpected friend with benefits. Meanwhile, Scotty faces an emotional illness when his father informs him of some shocking news about his marriage.

The family is waiting in suspense to see if the company behind Ojai's newest wine can be saved. Meanwhile, Rebecca and Justin tell each other life-changing secrets, Nora develops a crush on a younger man, and Luc and Sarah discover that they may not have the connection they thought they had.

Justin and Rebecca harbor secrets that could break their relationship for good, while Holly's financial crisis takes another bad turn. Meanwhile, Sarah becomes worried and jealous about Nora's romance as she struggles to overcome her own devastating break-up from her love affair with Luc.

The on-again, off-again, Walker style wedding plans of Justin and Rebecca take an unexpected turn, while Tommy takes a dangerous risk in order to assure that his daughter is by his side.

Kitty's lymphoma reaches a critical stage, while the Walkers' frantic search for a donor leads to an unlikely source.

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 experiences a new romantic interest for the first time after her divorce, while Kevin and Scotty are waiting for the results on their first try at surrogacy. Meanwhile, Kitty and Robert are again facing an impasse over politics when Buffy, Kitty's friend, steps in where she doesn't belong.

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.

Luc's visa issues cause monumental problems for Sarah, who not only struggles with her feelings for him, but worries that she might lose him again - this time to another woman. Meanwhile, Rebecca wrestles with Justin and with herself to move on after a huge loss, Kevin discovers breaking up with Robert is hard to do, and Holly thinks she has found the hidden value of Ojai Foods.

Kitty's newfound fame creates havoc for Luc and Sarah, as Luc faces possible deportation. Meanwhile, Nora swallows her pride and reaches out to Tommy to help her save the company from the Walkers' longtime nemesis, Dennis York.

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 to search for answers about Ojai's hidden worth, and Justin and Rebecca finally get their happily ever after.

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 to search for answers about Ojai's hidden worth, and Justin and Rebecca finally get their happily ever after.

Still reeling from discovering secrets about his childhood, Kevin refuses to attend his birthday party; Tommy, Justin and Kevin confront Dennis.

More than one member of the Walker family thinks she may be pregnant; Saul and Nora face some tough decisions regarding their aging mother.

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.

The Walkers are heartbroken as they prepare to shut the doors of Ojai Foods for good, but new opportunities and secret alliances develop as a result of the family's loss.

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, on the Season Finale.