This game has some bright moments, but those are hampered by the dark spots.
As for the story (Spoiler alert for those that actually care), it's probably the worst I've played through. You start as Darth Vader's apprentice. Could be interesting, right? well then, out of nowhere, you and a team of random people that don't really play much of a part in the game are rebelling against him. Then suddenly you have the choice to kill either the emperor or Darth Vader. Make sense? not to me. There are two endings, depending on who you decide to fight at the end, but I could care less what the other ending was because it was such a weak story. It wasn't at all emotional, and when it tried to be (the pilot kissing the apprentice near the end), it desperately failed. There was absolutely no relationship progression between them, making the kiss fully unpredictable, in the bad way.
Graphics were clippy, polygon-ish, and ill formed. I've seen way better on the Wii, it could have been so much better. What could have been an attractive-looking chick pilot, was just hard to look at. Every time she moved the polygons called her skin would shift position, along with the other characters. But I really noticed the poor graphical work in her more than anyone else.
What could have been a great game ended up a short, poorly controlled game with a bad story and uninspiring graphics. But if your looking to run around killing things for 6-8 hours, go for the game. But I would recommend a version other than the Wii one for the best experience.