Hello, and welcome to the obligatory

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christmasreadme.txt

It's like a game walkthrough up in this bitch.

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MANUAL INSTALLATION
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1) Download the mod.
2) Extract the .zip you downloaded into your Fallout 4 directory.
3) Enable HowTheMilkmanSavedChristmas.esp in the in-game mod manager.

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HOW TO START
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Travel north of Drumlin Diner, up the road. Eventually you should run into a man and his Brahmin.
Speak with the mysterious man and his mysteriouser Brahmin to start the questline.