Pete and Violet prepare for their wedding day; things take a surprising turn with Addison and Sam; despite disagreements, the doctors come together to mourn the loss of Dell.

Violet and Cooper make amendments to their friendship in order to please their significant others; Pete and Cooper get in an argument involving marijuana use by a patient (guest starring Justine Bateman as Sydney); Addison is conflicted about going public with her new romance, and Sheldon's decision to deny approval for a patient's sex change backfires.