Nathan worries about Haley as they prepare to renew their vows; Deb confesses to Dan about the fire; and Peyton and Brooke's friendship becomes strained.

Charlie and Mia start making their wedding arrangements. Things begin to fall apart when their two families meet each other. They eventually decide on a small ceremony in Las Vegas.

Ted tries to keep Robin from going on a camping trip so that she can spend time with him. Barney enlists the help of an old flame to perform a rain dance. At the same time Marshall finds out about Lily's interview for the fellowship in San Francisco.

Nancy must face the music when the DEA calls her in for questioning.

A surprise guest shows up at a sad event as Bette gets stunning news about her job. Tina goes into a surprisingly difficult labor, Jenny finally reaches breaking point over her painful childhood memory, Alice struggles with her jealousy, and Peggy Peabody lays down the laws with her daughter, Helena.