The Monohan family move into their new home in The Gates, an exclusive community of perfectly manicured lawns and friendly neighbors. But things grow complicated when Nick Monohan, the new Chief of Police, has to investigate those neighbors in a missing persons case during his first day on the job. Claire and Dylan Radcliff fight to hide not only their involvement in Nick's case, but their rather unusual family secret. Meanwhile, Charlie Monohan tries to adjust to his new school, finding a friend in the beautiful but unavailable Andie Bates. Just when his family is finally settling in, Nick's world is rocked by a late-night caller with some terrible news.

There's been a robbery at the McCallisters', setting off a series of similar mysterious robberies around town. Meanwhile Brett does his best to get his relationship back on track with Andie, though she still finds herself drawn to Charlie; Lukas encourages Brett to join the pack and blow off a little steam; Leigh is not herself when she loses an important package, and possibly her connection with Marcus; and Claire reunites with an old friend who questions her transformation to a humble housewife.

Dylan and Nick search for a damaging secret about Frank; social politics threaten Sarah's pool party; Devon experiments with Internet dating.

Nick tries to defuse a possible turf war between werewolves and vampires; Brett and Andie's relationship rekindles; Mia turns to Devon for guidance.

An FBI agent searches for a criminal who may have taken refuge in The Gates; Andie grows weaker by the day; Charlie finds himself with an unexpected new crush; Dylan and Claire struggle to repair their bond.

Devastated by recent events, the Monohans decide to leave The Gates; the Radcliffes pursue Devon; Brett desperately searches for Andie.