Judy Garland is making a winter visit to a northern city, where she has agreed to deliver a Christmas gift for a friend. The gift is delivered to a costume rental company, where Judy notices a beautiful white gown that seems out of keeping with the other costumes--and the owner is deeply disturbed when Judy points it out. As a favor to the owner, Judy agrees to deliver the dress to its rightful owner... and quickly finds herself embroiled in a mystery that may include kidnapping.