A Holiday Heist (2011) on Netflix

Plot summary

A group of college students who stay on campus over the Christmas break take jobs at a special exhibit in the college's art gallery. The students share little with one another. They decide to hold an unplanned dinner in the gallery on Christmas Eve, and there they come across a trio of bumbling thugs who are planning a heist of the exhibit. Held hostage in the gallery, the students are forced to spend the night learning about themselves and each other, finding the spirit of Christmas, and gathering the courage to work together. A Christmas romance begins to develop among the students.