In a small California town, Malik (Edward Furlong) along with his former girlfriend Gen (Cerina Vincent) her friend Barbie (Amber Benson), and another friend named Wes (Callard Harris) take a weekend getaway to an old ghost town where Malik and Gen played when they were younger.

The four friends climb down into the tunnels, and are observed by a mysterious old man (Steve Railsback) from a short distance away.

He tugs on a mysterious amulet hanging from a chain around his neck and pours what appears to be blood on the ground.

Barbie is then sliced in half at the waist when she attempts to stand on Jorge's shoulders to open another hatch.

Eventually the two safely escape the tunnels only to discover that they have lost the keys to their car, and they ask the owner of a nearby house for a ride.

In the house they find a bedroom covered with newspaper clippings about a teenager named Zee who was murdered years earlier in the tunnels; the old man was a suspect in the killing.

The old man is about to murder Gen by slowly stabbing her in the neck when the previously silent Zee tells him to stop.

The movie ends showing Wes and Barbie's dead bodies staring at Malik and Gen through their motel room window.

The reviewer concluded, "Intermedio won’t sit on your top ten shelf but it has its moments.

Lamkin concluded by writing, "I hate trashing low-budget horror movies as there are so many GOOD ones out there and nearly all of them are made by people who really CARE about them....