Lost TimeLords

Two young children sent to earth with their mothers to lead a normal life, their mothers not realizing the time-lord gene has passed on to them. Sky aged 8 and Rose aged 9 new to this world, there minds were wiped of any alien memory's only to have there mothers die in a car crash ( OR SO THEY THINK, calm down for Christ sake SHUT UP ) at aged 14 and 15, now three years later at a concert there secret comes crashing down, literally!