With a milestone birthday approaching, Porsha makes moves to celebrate and settle into a new life with her fiancé, Simon. Meanwhile, her family begins to question the speed of her engagement, and Dennis struggles to fully support Porsha's love life.

An unexpectedly emotional cookout leaves the whole family with questions. Porsha grapples with the future of her blended family, and Simon is put on the hotseat by Porsha's protective tribe. Dennis navigates his role as father and co-parent and Mama Gina turns a lunch with Porsha into a real "tea" party.

As the entire family prepares for their trip to Mexico, Porsha and Lauren focus on getting Simon and Dennis to join the retreat; Lauren's plan for family healing comes to a halt when Porsha finds out Dennis' intentions may not be genuine.

With the family in turmoil, Porsha's vision of a blended family looks more bleak than blended. Lauren struggles to maintain control of the spiritual path she had envisioned, and Dennis breaks the rules by bringing a surprise guest.

As the family vacation continues, Dennis pleads with the family to look out for Porsha. Lauren holds Porsha accountable for her actions, and a day of fun leads to an unexpected night that may destroy Porsha's hopes for a blended family.

Back in Atlanta, Porsha prepares for Pilar's upcoming surgery, while Aunt Liz hopes to reunite the family at the grand opening of Hosea Helps. Porsha and Dennis attempt to finalize the details of their co-parenting plan.