Bailey has a first-class case of the jitters on her wedding day. She kinda, sorta asks Callie, Arizona and Meredith to be her bridesmaids by telling them to not sit down during the ceremony. Callie jokingly suggests that Bailey could leave Ben at the altar if she's truly scared. Richard offers to help take the edge off by offering her a surgery. It was all Ben's idea. However, Bailey still won't give in to their request to have a car take her to the ceremony. She wants to drive herself, wedding gown and all.
Derek and his sister, Lizzie (guest star Neve Campbell), verbally spar with each other as Jackson brief them on their surgeries. This brother-sister banter they share is nothing new. Derek wants to call off the surgery when he learns they need to take nerves from both of his sister's legs. Meredith pleads with Lizzie to talk him out of this. She's shocked when her sis-in-law rants about how her side of the family was left out of the loop for important family events like their wedding and Zola.
Callie operates on Derek after Jackson removes the nerves from Lizzie's legs. Both patients are recovering nicely. It'll take time to know how Derek's hand will function. As for Meredith, she refuses to get too excited about the fact that she's having a baby. It's that whole hostile uterus thing that's giving her pause. Still, she makes an effort to get closer to Lizzie by showing her a picture of the ultrasound before anyone else. Nice.