In which Klaus Mikaelson travels back to his old home New Orleans after hearing about a witch conspiring against him, only to find his former lover, whom he thought was dead, not only dating, but ruling alongside the boy who had raised as a son, Marcel Gerard. The Originals - Season 1

Cassie accidentally messages the wrong number... and it turns out it is the one and only Klaus Mikaelson. Set during the vampire diaries. (I don't own the vampire diaries or any of the characters in it apart from Cassandra and any other characters I make up)