A double homicide leads Nick and Hank to a traveling carnival where the performers are not what they seem. To get a better understanding of what's going on behind the scenes Monroe and Rosalee go undercover. On the wedding front, Monroe has a really important question for Nick. In Austria, an invaluable member of the Resistance makes the ultimate sacrifice to help Adalind.

Nick's power loss aftermath showed that the changes are far more than anticipated, Elizabeth, Monroe and Rosalee look for the cure. Nick and Hank call on Trubel to help out on a case.