From the liner notes

Ghost House Underground presents this horror-fest hit hand-picked by Sam Raimi and Rob Tapert, the minds behind Drag Me to Hell and The Evil Dead. Beware The Children.

You brought them into the world. They will take you out. A family anticipates a Christmas filled with sledding, laughter and hot cocoa as they head to their vacation home in the secluded backcountry…The holiday cheer takes a fast turn for the worse after a mysterious flu-like virus sweeps through the kids. One by one the children become deadly. Amidst the suspicion, mayhem and murder, the parents fight for survival against their own twisted offspring.