When you think of a film set, you think of hustle and bustle, noise and activity.

Shaun and his friends are real physical models placed on physical sets and photographed over and over, with the photos combined to create the illusion of dynamic movement.

When the music and sound effects are dubbed in afterward, the result is always a hilarious slapstick adventure -- and new movie Shaun the Sheep: Farmageddon is no exception, complete with added references to classic sci-fi movies for older viewers.

Earlier this year, I visited Aardman studios in Bristol, England, to learn the techniques behind films like 2015's Shaun the Sheep Movie, 2000's Chicken Run and 2005's Oscar-winning Wallace & Gromit: The Curse of the Were-Rabbit.

Model makers work at desks piled high with tools, from soldering irons to hair dryers to the omnipresent magnifying glasses and lamps so they can see what they're doing.

In Farmageddon, Shaun encounters the cute pink alien Lula -- even more curious and mischievous than the cheeky sheep -- whose body is made out of silicone so it stretch and squash more fluidly.

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