You go to then after you beat the krayt dragon and get the holocron.) after you finish your third planet head to dantooine before you get there you will get picked up by the leviathan after you finish the leviathan you will see the cinematic of you landing on dantooine(it was just destroyed!!!) and then everyone will be standin around in ur ship in a circle in the middle of the ship and you'll have 2 party memebers with you head for the cockpit and youll see a droid and hell take u to any planet and each one will start from the beginning if u go there it only works once tho so use it wisely i suggest taris but save before you choose good luck.