Nick and Hank are called to an unusual crime scene with a victim who appears to have died from clay-induced asphyxiation. At the precinct, Wu begins to grow more suspicious of Trubel's presence. At the Spice Shop, Elizabeth makes a major breakthrough with regards to restoring Nick's powers, while Monroe and Rosalee experience cultural backlash as a result of their inter-Wesen marriage. In Europe, Adalind hopes that putting trust in her mysterious visitor will help her escape the dungeon.

The justification for Nick to become a Grimm again is made much clearer in the wake of the most recent attack against Monroe and Rosalee. At work, Nick and Hank are called to a stretch of highway that acts as a staging area for a horrifying Wesen ritual. In Vienna, Viktor meets with a completely broken Adalind, now ready to be of assistance in finding and retrieving the baby. Meanwhile, Trubel is surprised by the sudden arrival of an old friend.