The Nightmare Before Christmas Plot Summary: Jack Skellington is the King of Halloween, but is about to discover something news. Jack becomes bored and tired with the same routine every year, and takes a walk into the woods, in which he discovered a door leading to Christmas time. Christmas time is amazing to Jack, but he doesn't fully understand the concept. Now, he want to bring Christmas to everyone, and is planning to take over the job from Santa. Problem is, the real world isn't used to Jack's lifestyle, and it's not going to go to plan for Jack at all.