Paul's sister arrives in town and pries into his life, causing trouble. Meanwhile, Grace is eager to tackle wedding planning, but Maryellen isn't; and the hostility that exists between Jack and Paul is put on display during a charity baseball game.

Will overstays his welcome at Olivia's home. Meanwhile, Jeri is angry that Jack was offered her job; Paul attempts to go on his first postdivorce date; Rebecca grows exhausted as she tries to prove herself to Paul; and Luke has something to share with Justine.