A devastated Cristina presses Owen to confess the intimate details of his affair.
Mark takes his new authority very seriously when he steps in as chief for the day and butts heads with Richard over a patient's liver transplant.
Callie deems Meredith ready for the boards, while the rest of the residents continue to stress about the exam.
Meanwhile, Callie, Arizona and Bailey plan a much needed ladies night for Teddy.
Written by Heather Mitchell
Directed by Allison Liddi-Brown