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The Walkers attend a swanky launch party for Luc's underwear ad campaign. Despite visits from Justin, Holly still struggles to remember the things that were once most important to her.
A year has passed since the car accident that ended Season 4. The Walkers have, uncharacteristically, been avoiding everyone else. Truth starts to set in fast, however.
The Walkers uncover the mystery of Narrow Lake, while a car accident leaves several family members in peril on the fourth season finale.
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.
Cooper acts out and Luc and Sarah hit a crossroads. Justin considers going back to war. Robert meets with a mysterious guy amid Kitty's run for Senate.
More than one member of the Walker family suspects she might be pregnant, Nora offers to take her aging mother in when it's discovered she has dementia, and Luc gets an exciting delivery in the mail.
Still reeling from his discovery of Nora's buried secrets, Kevin refuses to attend his own birthday party. Justin, Tommy and Kevin confront Dennis York.
A two-hour flashback episode shows us sides of the Walkers we never knew existed, while in the present day, they try to unravel the mystery surrounding Dennis York.
Kitty's newfound fame creates havoc for Luc and Sarah. Nora swallows pride and reaches out to Tommy to help save the company from the Walkers' nemesis Dennis York.
Luc's visa issues cause problems for Sarah. Rebecca wrestles with Justin and herself after their huge loss, Kevin may break up with Robert, and Holly thinks she finds the hidden value of Ojai.