One day the doctor was in the tardis then he got a message that said"doctor you can pull me out of the other dimension. He thought "who contacted me". Then it hit him it was rose it must have been. But he pondered the fact that the tardis can't do in different dimensions even though . In the name it say relative dimension in space. But the time lords did say there was a way to make the tardis move in other dimensions. But he didn't believe it at all . So he went to the sister hood for an answer . He new one thing though he would not stop till he found rose. He finally arrived so he asked them this " Would there be a way to get rose Tyler back ". They said the tardis doesn't have all the energy needed to travail to other dimensions". So he thought about the best way to get power for the tardis . Then it hit him he would need the power of a cyber man head . So the best thing to do was find a cyber man and beat it.