Danger Mouse and Penfold travel on the Orient Express with a document they obtained from Greenback.

Danger Mouse travels to the moon and discovers it has been turned into a scrap yard, which has caused the tide to change and flood the Earth.

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.

While on holiday in Spain, Penfold is kidnapped by a mad Coyote who thinks he is Don Quixote. They go tilting at a windmill that happens to contain Baron Greenback's latest device for world domination.