In a spooky and scary Halloween special, Danger Mouse faces the Queen of Weevils. It's a fearful moment to remember.

The Danger agents go undercover disguised as a family to find out why the world's villains are heading to one holiday camp, Sidneyland. When Baron Greenback shows up the team are convinced he's up to no-good, but can't find any evidence of wrongdoing. When Penfold enters Squawk and DM in a dance competition they discover the prize is the fabled Helmet of Power, an ultimate invention bent on destruction.