Evil Aliens (2005)

The cast and crew of Weird World drive out to an island (only reachable at low tide).  The island is owned by a farming family of three brothers and a sister.  The sister has claimed she was impregnated by an alien.  There is a stone circle on the island which is rumored to be cursed and is the spot of the alien abduction.

Although Weird World reports on UFOs, the supernatural, and Cryptozoology, none of the cast or crew  have ever seen anything to make them believe in what they report on.  In fact, they don't believe anything they report on and believe only in how much money they can make from sensationalizing the stories.

They decide to bring uber fan Gavin, the head of a UFO club, to help sell the reality of the story.  Gavin regularly writes to them to report any errors they've made and is a true believer in aliens.

Also on board for the trip are several actors and an alien suit so they can reenact the abduction.  They interview the sister, who gets upset when they start cross examining her and obviously don't believe her.  Gavin discovers they are faking evidence for their show.  The host claims they are just there to entertain, and informs him that everything they've ever reported was fake.

What the cast and crew doesn't realize is that they have stumbled across real alien activity and the stone circle on the island is a charging station for alien ships.  Soon they will have a battle on their hands as they try to survive the alien onslaught.