Kingdom Hearts Dimensions: Holiday Adventure

It's almost Christmas in Mark and Sora's world, and Sora's been really busy trying to make this Mark's best Christmas ever. It'll be Mark's first time having Christmas in Kingdom Hearts! But where there is fun, there is danger. And this time, it isn't the Dark Figure. Sora was on his way back to Mark, to spend some time with him since he hasn't seen his loving boyfriend since he's been so busy. But, he saw a door. A door that looks like the doors that lead into Mark's video games. Out of curiosity, he walked in, only to realize he couldn't leave.

What will he do to get back home?