The player character is a summoner who can summon magical creatures. Prophecy, kill the tyrannical Emperor, yada yada yada, you know the rest. Travel the world, do side quests and find more summons.

In this sequel you play as Maia. She can transform herself into a a variety of summonable creatures. A bit weaker idea then the first game. Explore areas in the world and find characters to add to your party. You can have up to three characters in the party from a total of seven. Reminds me of Kotor.