A surprise visit boosts Kitty's spirits during her chemotherapy treatments; Sarah mulls telling her kids about Luc; Ryan and Rebecca help Holly with an important business move; Kevin and Scotty come to an agreement in their desire to start a family
Sarah's new beau, a French artist named Luc (Gilles Marini), makes an instant impression on the Walkers; Robert does his best to take Kitty's mind off her illness; Kevin and Scotty's debate over starting a family takes an interesting turn.
Sarah returns from France and tries to keep Kitty's mind off her health problems with stories of her dalliance with an artist (Gilles Marini). Meanwhile, Justin faces a tough row to hoe in his first anatomy class, and ponders how to keep up with a much younger classmate.
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.
As Robert worries about news of his recent heart attack leaking to the press, Kitty struggles with an untold secret that will deeply affect their marriage and bring the Walker family together like never before. Meanwhile, Kevin and Scotty discuss the real possibility and challenge of surrogacy.
Kitty has a secret that could ruin her family. Nora and Holly plan an engagement party for Justin and and Rebecca. While Sarah searches for a new business venture in France.