The Park Service

the long version

"Aubrey Van Houten is a 15-year-old misfit who spends his time reading and dreaming about the good old days above. Believing the planet uninhabitable after a global nuclear war, Aubrey's people live deep underground, begrudgingly working assigned jobs until they can retire at 35 to a virtual reality paradise. Through a series of curious accidents, Aubrey stumbles onto the surface and discovers a real paradise off limits: a pristine planet where humans are hunted and killed by a mysterious Park Service. Now, Aubrey must decide between his only friend, his true love, and his imprisoned people, as he struggles to find the courage to stand up to evil, no matter how pretty its face"--Amazon.com.