As Sarah and Luc's nuptials approach, plans go horribly awry and the Walkers learn several surprising lessons about the real meaning of family.

Cast: Dave Annable, Sally Field, Calista Flockhart, Rachel Griffiths, Luke Macfarlane, Gilles Marini, Matthew Rhys, Ron Rifkin, Patricia Wettig, Balthazar Getty, Beau Bridges, Sônia Braga, Ryan Devlin, Kerris Dorsey, Maxwell Perry Cotton