Noah embarks on his journey with the Descent movie by getting acquainted with his star, Sasha Mann. Helen mourns a tragic event. Sierra welcomes a new arrival. Joanie struggles with an upcoming birthday.

Janelle struggles with her relationship and work, so turns to Carl for support. Production for Descent commences, and Sasha takes an interest in Helen. Helen takes her first steps towards acceptance.

Sasha proposes adjustments to Noah’s script. Sasha’s relationship with Helen blossoms, and Noah takes notice. Bruce’s condition worsens. Joanie’s business trip leads to violent encounters.

Noah, Margaret and Stacey bond over their mutual distaste for Sasha. Noah attempts to sabotage Helen and Sasha’s relationship. Whitney and Colin face the hardships of their relationship. Joanie visits the graveyard.

Sierra struggles to balance motherhood with her burgeoning acting career. Sierra's mother visits uninvited. Helen works her first design gig and begins to focus on herself.

In Montauk for work, Joanie becomes acquainted with EJ. Together, they explore Joanie's family history, leading her to question the cause of her mother's death. Rattled, she starts to make some self-destructive decisions.

Noah and Whitney travel to Montauk to begin planning the wedding. Noah gets a concerning call. Armed with new information about her mother's death, Joanie confronts a stranger.

As controversy swirls around Noah, Helen and Whitney must decide where their allegiances lie.

As wildfires threaten Los Angeles, Helen and Noah are forced to run for their lives and confront old wounds along the way.

It's Whitney's wedding day and everything comes full circle.