Nick, Hank and Juliette learn an incredible historical secret about the Wesen. Meanwhile, Adalind and Meisner are forced to run for their lives when Sebastien reveals their location.
An unexpected ally helps Adalind and the baby get out of Europe safely. The preparations for the wedding of Rosalee and Monroe remind Nick and Juliette of their relationship, which has broken down.
The team tries to bring down the crooked CEO of a greeting card company by posing as efficiency consultants, but have to work around a camera crew filming a documentary on American small businesses.
A foreign diplomat determined to avenge the death of his brother, McCall's rapist, challenges Hunter to a quick-draw showdown.