In Devil's Junction: Handy Dandy's Revenge, a group of filmmakers decides to use the abandoned TV studio in Detroit as the location for their new horror movie. However, as they begin filming, they start to realize that the studio is haunted by the ghost of a magician/ventriloquist named Handy Dandy.
Handy Dandy was the star of a popular children's show in the 1960s, but he was driven to madness and committed suicide on live TV after his ventriloquist dummy, Mr. Jolly, came to life and started killing people. Now, Handy Dandy and Mr. Jolly are back and looking for a new live (or dead) studio audience.
As the filmmakers continue to shoot their horror movie, they become unwitting pawns in Handy Dandy's plan to unleash his vengeful wrath once again. The ghostly magician/ventriloquist uses his powers to manipulate the crew and cast, driving them to madness and making them turn on each other.
As the body count rises, the remaining survivors must find a way to stop Handy Dandy and his deadly dummy before they become the next victims. But with the vengeful ghost and his evil sidekick on the loose, even the bravest among them may not make it out alive.