Unaccompanied Minors is Comedy movie about the adventures, as the name goes, of ‘Unaccompanied Minors’, on the eve of Christmas. The minor’s adventure also tells us about the importance of Spirit of Christmas.
It is Christmas and a snowstorm has forced the airport to shutdown which is a bad news for the all the passengers as they all have their own plans for the occasion. Stuck in the airport are two kids-Spencer (Dyllan Christopher) and his little sister, Katherine (Dominique Saldaña), who are actually Unaccompanied Minors. They were supposed to be on their way to their father’s home but now they have to wait at airport's Unaccompanied Minors Room. This room is filled with kids like them from all over the world. Spencer doesn’t like the atmosphere of the place and decides to escape from this place.
The other mates of the room mainly Charlie (Tyler James Williams) a studious kid, Boyish-Donna (Quinn Shephard), Grace (Gina Mantegna) a spoiled rich girl and comic-book lover Timothy Wellington a.k.a. 'Beef’ (Brett Kelly) feel the same. With freedom on their minds they make a run for an escape.
The airport management including an irritable Passenger Relations Manager Oliver Porter (Lewis Black), his assistant Zach Van Bourke (Wilmer Valderrama) and the airport security guards are the obstacles for the Spencer’s group of Unaccompanied Minors in their great escape. But as a team they can overcome these obstacles.
In the mean time other Unaccompanied Minors including Spencer’s sister have been shifted to a nearby hotel till the storm passes out. Spencer feels that his sister’s Christmas will be spoiled and that he must be along side with her on this occasion. So he and his group run amuck creating chaos at the airport with Oliver and his staff close on their heels. Their adventure make them go through dare devil acts including dropping with the luggage parachutes and making their way down a snow covered hill on a boat. They finally manage to outsmart the airport staff and in the process celebrate Christmas in its true spirit.