After bonding with a young patient, Shaun suspects that he’s been misdiagnosed with a fatal form of brain cancer. An elderly patient’s allergic reaction exposes a longstanding rift with his son.
Leslie (Amy Poehler) aims to create a new town slogan, but runs afoul of local shock jocks (Special Guest Stars Nick Kroll and Matt Besser). Andy (Chris Pratt) scouts bands to play the Unity Concert and discovers an interesting secret about Ron (Nick Offerman), while Tom (Aziz Ansari) looks for a restaurant locale with Donna (Retta) and April (Aubrey Plaza).
As Gideon looks into Amanda's past, Olivia and Fitz's start on the campaign trail is revisited.
A catastrophic event forces Olivia to go back to work at the White House; the first few days of Fitz's presidency.
When a Los Angeles bus is attacked with sarin gas, the BAU must act quickly to find the suspect before a larger-scale incident occurs.