First you have to select a rebel and an R2 droid, then arm yourself with explosives and try to save the Rebel Homeworld. As you attempt to complete your mission, Darth Vader, (with real video footage of Darth Vader~David Prowse and the voice of James Earl Jones) will monitor your every move, instructing you, commanding you to surrender, or if the Force is not strong in you, take control of you to do HIS bidding. - BoardGameGeek