Dawn is Klaus Mikaelson's daughter but Klaus didn't know she was existed, until Elijah told him about her. Dawn was 16 years old, living alone after now that her 'grandmother' died, what she didn't knew that she wasn't her grandmother and that she took her in after she was left in her front door, by Elijah. After Dawn met her real family, she was brought to a new world she didn't believed in; The supernatural world, were Vampires, Werewolves and Witches existing.