The wedding of Mark Greene (Anthony Edwards) and Elizabeth Corday (Alex Kingston) may never come off, thanks to a combination of terrible weather, squabbling in-laws, a misplaced wallet, and a clueless limo service. Back at the ER, with most of the nurses invited to the wedding, Abby (Maura Tierney) must hold down the fort while suffering from a bad cold; and Kovac (Goran Visnjic) and Carter (Noah Wyle) argue over the treatment of the victims of a prison-van accident. And while embarking on a vacation to get over her relationship with Legaspi, Weaver (Laura Innes) makes a new "friend" (Casey Biggs). ~ Hal Erickson, Rovi