The first Golden Sun was amazing, I warmed to it's visuals and it's classic feeling storyline and it was great value for the amount of quest you got! All I can say, is that this is more of the same and that's a good thing!
Set straight after the events of the last game, this sees you lead a new team, some of whom are related to the team of the first golden sun and made appearances in the first game (i won't say who, since you might not have played the original)...
Suffice to say the quest is huge once again, moving from dungeon to dungeon in true old school RPG style, fighting various different creatures along the way and training your squad up... There's even the opportunity to transfer your data from the old game if you've spent time training Issac etc and have great weapons.
I don't want to say too much about the game because it really is a personal experience to me, both games are! So i just recommend you go and pick it up and the best thing is, there are old unboxed carts floating around various sites for £5 or so, which is pennies considering what you're getting..