Cat is just an ordinary American teenager: she goes to an average school, gets fairly good grades and lives a pretty normal life... well, until the Doctor whisks her away in his TARDIS. Even with all of his mad adventures, things end up being more timey-wimey than usual, and she suspects that he knows far more than he's letting on. Now his full-time companion, she has to figure out just what is going on with this Time Lord before... well, before time runs out.

If there was one thing she was terrified of, it was losing me. And after four years, vice versa. She was the one person I never wanted to lose, the one person I couldn’t handle losing. And I lost her. Jayden thought she was a perfectly normal girl who just happened to have weird dreams about being a completely different person, a gun shooting, ass-kicking Time Lady with the fake name Artemis. It's not until she meets the Doctor that she realizes that those weren't just dreams. As a Time Lady again, can she get over the pain of her past? Can she handle the pain to come?