Pia and Nora are now united in their mutual hatred of Renee, though Nora's obsession with Renee is starting to wear on Pia. Christina shares her anguish over her divorce with Leah, who is emotionally undone by news of her mother's battle with breast cancer. Meanwhile, Renee's adult daughter, Giana struggles with her mother's offer to go with her to visit her father in prison. Nora celebrates her birthday by inviting everyone, but Renee to go-kart racing. Nora's continued rants about Renee push Pia to lose her patience and reveal a secret about Nora that threatens to end their friendship forever.