Derek, George, Alex, Burke, Richard, Joe and Walter go on a camping trip. Meanwhile, Meredith assists Mark with gender reassignment surgery, Izzie avoids discussing her grief, Addison works with Callie, and Cristina feels Bailey's...
Stars: Ellen Pompeo, Sandra Oh, Katherine Heigl
Director(s): Daniel Minahan
Writer(s): Shonda Rhimes, Mark Wilding