Meredith faces the medical board as her future as a doctor remains uncertain, and she’s forced to reckon with her past in some challenging ways. Meanwhile, the interns are put to the test as they are each vying to be the most successful on their respective cases in the absence of some of the attendings.

After taking the stand during Nate Senior’s murder trial, Bonnie’s world is turned upside down when a mysterious accident leads her to a hard realization. The students compete for a large cash bonus during the final exam where they must come up with the best defense for a conspiracy-to-murder charge.

Rollins goes undercover to find a suspect who is drugging and assaulting tourists, while Benson helps the victims sort out their memories from their hallucinations.

Sam and Dean’s routine case turns out to be anything but.

Amy and Jonah help Mateo run a toy drive to make him look good for his immigration hearing, but they clash with a competing charity rep. Sandra and Jerry ask Glenn to officiate their wedding despite Dina’s protests. Cheyenne gets real with Garrett.

As the Judge hears Michael and Shawn's arguments about the results of the experiment, Janet and the humans give each other the funerals they deserved.

Jimmy welcomes former professional baseball player Alex Rodriguez, actress Lili Reinhart, and comic Ian Lara.