While the doctors prepare for Bailey's wedding, Richard helps her with her anxiety; Lizzie and Meredith butt heads; Callie and Jackson try to get Derek to submit to a risky surgery for his hand.
Sheldon heads to Arizona. Leonard and Amy make an unexpected trip and follow him and Penny goes for an interview.
When Clark lodges a complaint against Ken, Ken must attend a training seminar on bedside manner, and Allison is left to have dinner with his parents.