When Santa vanishes during a chaotic Christmas, a quirky actor tries to replace him. A father, his teen son and special friends must rescue Santa to save Christmas.

What would happen if, one year, Santa Claus was forced to cancel his Christmas Eve appointment with the world’s children?A few days before Christmas, the famously cheerful and magical giver of gifts has an accident on his sleigh, right in the middle of Madrid. He ends up in hospital, which is where he’ll have to stay until after Christmas. Fortunately, the guy he’s sharing a room with at the hospital, Salva, is willing to step in and take on his all-important Christmas work. But it won’t be easy… the Christmas countdown clock is ticking and Salva has to find the reindeer, learn to fly the sleigh and, the most difficult part of all… learn to be a good person.

In the Headquarters of the T.I.A. (Terminal Intelligence Agency), someone has stolen Professor Bacterio's most dangerous invention, the D.O.T. (Demoralizer of Troops), an artifact that ends up in the hands of a very short, wacky dictator who is ready to use it for criminal purposes. The T.I.A Chief, though, is firm in his resolve: if he wants to get the D.O.T. back, he must NOT count on his agents Mortadelo & Filemon. But when the crime fighting duo discover that the T.I.A. has engaged a cocky and slimy detective from outside the agency, they decide to act at their own risk, even if that risk involves all of Humanity.

在城市外围的荒野上，住着一户生活在房车内的人家。男主人佩德雷（Emilio Gavira 饰）是前马戏团的侏儒表演者，内向的儿子西卓（Aníbal Tártalo 饰）喜爱天文，内心却以侏儒的父亲为耻，经常躲在马戏团废弃的炮筒里，或者沉浸于对太空世界的幻想之中。
放学时刻，西卓怕同伴们嘲笑，躲在厕所里最后一个离开学校。他的心事为佩德雷探知，佩德罗将其关在房中，不准吃晚饭，西卓溜出房间，再次躲在炮筒里。佩德雷走进儿子的房间，若有所悟，第二天他抬出废弃的大炮，手指向天空。夜晚，随着一声炮响，佩德雷消失在茫茫夜空之中……