Training has begun, bringing the newest Slayer and Watcher closer together. Will they be ready when they're needed most? The rapidly growing zompire population has overcome a local institution, and our heroes in training must take on the fight of their lives! Buffy show writers Jane Espenson (Once Upon a Time) and Drew Z. Greenberg (Warehouse 13) reunite in this special two-part story about a young duo coming together to fight the forces of evil and discover their role in this strange, new 'verse. * Executive produced by Joss Whedon! * Arc finale!