Stiles runs away during his first heat, right into the waiting and ambiguously scary arms of the Alpha's nephew, Derek Hale. He doesn't have any choice except to submit, but along the way, he digs up a mystery that threatens his family and even the town's safety.

As it turns out, the Extremis hadn't quite finished rewriting Tony's brain. The only potential fix has...consequences.

Stiles doesn't notice the constant buzzing in his head until it's gone.