男童凯文的一家和其他普通家庭一样，在忙碌快速的现代生活中周转不停，然而某个夜里，六个由衣柜闯出来的矮人打破了凯文平静的生活，他们自称是上帝的雇工，窃取了上帝的地图可以让他们在不同的时空游走。凯文由此进入了超出想象的奇妙生活。一行人先后降临拿破仑的战场，加入了罗宾汉的队伍，矮人们瞅准任何机会偷窃不停。与此同时，黑暗城堡中的邪恶之神醉心高科技，妄图通过科技的力量取代上帝统治，他施法将凯文与矮人们分开。坠落古希腊的凯文不经意间救得英雄阿伽门农国王（肖恩·康纳利 Sean Connery 饰）的性命，感恩的英雄将凯文立为继承人，这时矮人们却匆匆赶来将凯文一步步带入了邪恶之神的陷阱……
An uplifting and heartwarming story about finding the magic of Christmas, no matter where you might be, This Is Christmas follows Adam (Alfred Enoch) and Emma (Kaya Scodelario) as they make their daily commute from the picture-perfect village of Langton to London for work. Every day they share their journey with the same characters, but they all keep themselves to themselves. But then one day, in the build-up to Christmas, Adam breaks the unwritten rule of travel and starts talking to the strangers on the train, inviting the whole carriage to hold their own Christmas party.
