Cristina is unanimously picked by the attendings for the first solo surgery, but is unable to do so due to her punishment from the Chief; Bailey tries to help Mark rebuild the voice box in a woman who has not been able to speak in 5 years.
While Barney prepares for his wedding to a mystery bride, he and Ted reminisce about Punchy's wedding. Meanwhile, Robin considers telling Barney she has feelings for him.
Kate and Toby's lives take an unexpected turn. Meanwhile, Rebecca encourages Kate's singing aspirations.
Cracks begin to show in Richard's latest partnership when he's forced to deal with an unexpected interloper, while Monica considers her options.
When a hostage situation erupts at the East Miami Police Department, Rosie, Villa and Slade end up in the thick of the action.