Kitty guards a devastating secret that could change the Walker family forever. Meanwhile, Nora and Holly work together to thrown an engagement party for Justin and Rebecca; Tommy remains in Mexico; and Sarah heads to France.

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.