The program shows Horner and his digging team as they travel to the Hell Creek Formation in Montana, USA, and dig up dinosaurs.

The program also follows Horner as he presents arguments for his case of Tyrannosaurus as a scavenger. Horner argues that there is not the slightest evidence thatTyrannosaurus hunted its own prey. Instead, Horner believe the evidence should be clear that Tyrannosaurus was a scavenger, lamenting that "no one likes that idea". Some of Horner's arguments for a scavenger-only Tyrannosaurus are....