In a Alternative Galaxy Far Away

On Mustafar, Obi-Wan retreated and Anakin was never injured but still turns to the darkside, At Yavin, Luke was shot down and killed before his torpedos ever launched and the Rebellion was soon killed off afterwards, Seven years after the battle of Yavin, Emperor Palpatine is found dead in his chambers after Anakin enacts the "Rule of Two", The Empire prospers under Darth Vader and any Insurgencys are destroyed. You are a crewman on the Imperial Star Destroyer, Inquistor , apart of Lord Vader's fleet, your role no matter how small is of utmost importance.