Quick recap
Official premise: Christmas at Battle School, during Ender's time there. The school bans any religious observance, but some students decide to exchange gifts anyway, and the fight reaches the commanders. At the center is Zeck Morgan, a preacher's son and committed pacifist, an antihero who turns the gift war into a serious problem. The novella also shows Muslim students reacting to the celebrations, a seed of what the graduates would do on Earth years later.
No spoilersOpens once you mark the title as seen.