The hospital staff anxiously prepares for the birth of quintuplets, but the delivery is a extremely difficult one and the outlook isn't promising for the undersized infants. Somehow or other Burke (Isaiah Washington) finds time to slip Cristina (Sandra Oh) his apartment key, which temporarily throws her off balance. Elsewhere, Meredith (Ellen Pompeo) is shocked and embarrassed when a guy she'd picked up at Joe's bar the night before shows up at the hospital with a painful priapism--and Derek (Patrick Dempsey) is the consulting physician! ~ Hal Erickson, Rovi