When an alien with amazing powers crash-lands near Mossy Bottom Farm, Shaun the Sheep goes on a mission to shepherd the intergalactic visitor home before a sinister organization can capture her.

A groovy mushrooms dealer and a man from the 5th dimension journey through Hollywood to find the meaning of "Mondo."

Parody of Der Exorzist (1973), with Linda Blair once again possessed by Satan, and Leslie Nielsen as the exorcist.