Finding that his relationship with Natalie has become strained and a distraction, David has her moved to another job. However, he is spurred to action on Christmas Eve when he finds a Christmas card from Natalie declaring that she is his and no one else's. After a door to door search of _her_ street, he comes across Mia, who informs him that Natalie lives next door. <sep>, Pronoun: her <sep>, A: Mia <sep>, B: Natalie