After the deaths of Henry and Katrina, Ichabod goes to find himself while Abbie joins the FBI. However, the discovery of an ancient tablet brings Ichabod back to the U.S. and the Witnesses discover that the Second Tribulation may be starting.

Pandora resurrects an ancient evil from Ichabod's past to terrorize Sleepy Hollow. Meanwhile, Jenny takes Joe along to track down the Shard's thief, and Daniel offers to clear the air with Abbie.