copyofclara:

When Clara Oswald jumped into the Doctor’s time-stream, she split herself up into thousands of pieces, all scattered across time and space. These “other Claras” live their lives never knowing they are anything other than ordinary. They’re born, they live, they die…
But when Clara “Oswin” Oswald discovers that she is not her own person, merely the “echo” of the original Clara Oswald, she refuses to accept that she is anybody’s copy. Angered by her feelings of inferiority, she begins to track down and kill the other echoes one by one. Once the others are gone, to finally prove she is the true Clara, she has one last target: her creator.