Here is how the Shadows attack and Mumfie saves Twilight and her friends in Mumfie's Equestrian Journey.
That night, Queen Novo honored their old and new friends with a banquet for their arrival.
Queen Novo: (tapping her glass with a spoon) Can I have everyone, everypony, and every creature's attention please?
Mumfie: Quiet, everyone, everypony, and every creature!
Queen Novo: (as everyone paid attention and she looked at Mumfie) Thank you, Mumfie. (clears her throat) Now that I have everyone, everypony, and every creature's attention, I would like to honor the arrival of Prince Derek, Princess Odette, and company, especially Mumfie and his Alliance of Friendship. So, let's enjoy the occasion for tonight.
As they all raised their glasses of their drinks, Mumfie was glad to shared his honor.
Silverstream: Best Banquet Ever!
Princess Skystar: Woohoo!
But suddenly, one of the shadow demonss snatched Twilight and her friends out of nowhere.
Twilight Sparkle: Help!
Mumfie: Don't worry, Twilight. I'll save you!
With a few tricks up his sleeves, Mumfie used the bright light spell to take out the shadow demons one by one.
Mumfie: That takes care of them.
So, he ran up to Twilight to see if she's okay.
Mumfie: Are you alright, Twilight?
Twilight Sparkle: I'm okay, Mumfie.
Queen Novo: What just happened!?
Louis: Those shadows were attacking, they belong to the Shadow Man.
Puffin: You mean the one that Mickey Mouse and his friends faced?
Twilight Sparkle: But at least we're all safe, thanks to Mumfie.
With Mumfie being thanked by Twilight and her friends, that got him thinking about being special.