All hell is breaking loose inside the house and out as Jeff and Greg try to contain Brian and Mike encounters his first zombies. Jeff and Greg are stuck in their own house now as something is about to join Brian in the hunt for the living -- something a little familiar to the guys. Meanwhile, Mike tries to convince Lauren that this is real -- and that he and his friends are the only ones that know what to do. It's a hard sell. But there's only one way to prove it.