Star Wars Empire (1-4 series) Complete

Empire is always associated with firmness and authority. The basis of this power - the fear of the imperial army and the Emperor himself. But some believe that the power of the Sith is not acceptable for the Empire, and its place should take military dictatorship. A group of influential persons, headed by Grand Moff Trashtoy preparing a plot to overthrow Palpatine. But someone who betrays?