The Librarians Alternative Universe: Museum worker Cassandra Cillian and historian Jacob Stone have had an online romance for months but an innocent mistake causes a chain of events that leads to Stone mistaking Cassandra's co-worker Eve Baird for her. Cassandra goes along with the ruse while Stone convinces his friend Flynn Carson to stand in for him on a date with "Cassandra". Confused and a little miffed that their friends are hitting it off, the real Jacob and the real Cassandra turn to each other as "Flynn" and "Eve", but then they start to fall in love . . . .It's a merry mix-up but will everyone's holidays be happy when the truth comes out?