Kate, her coworkers, and friends are off and running again when she befriends a tree climbing, alien-watching man living in the backyard of her house-to-be, and she is kidnapped by aliens. Confusion and levity ensue when the CIA, Homeland Security, the US Armed Services, the Maricopa County Sheriff's Office, the Phoenix Police Department, and Kate's real estate agent join in the search to find Kate.
Matters are further complicated when Kate's mother makes a surprise visit, and Kate and her friends are confronted by their most dangerous foe yet.