Danger Mouse and Penfold are sent to the Arctic when Greenback threatens to melt the polar ice with sun lamps.

Danger Mouse and Penfold are sent to track down a huge hairy monster that has been crushing the local villages. When they find it they discover he's actually friendly, but suffers from extreme bouts of sore-feet. They get help from the RCMP - Royal Canadian Mounted Podiatrists.

Danger Mouse is sent to stop Greenback who is behind the theft of America's greatest buildings.

Professor Crumhorn creates a robot duplicate of Penfold (which is far more efficient than the original). At the push of a button it transforms into a giant machine intent on destroying Danger Mouse.

The Mark III runs out of gas, leaving DM and Penfold stranded in the Sahara Desert.