So the story would be about the vassel which contains the ashes of the fire God being stolen from it's sanctuaryby a group of thieves, the only clue that the characters have is that one of the thieves is an ice God guardian, so the party will have to travel great distances and face many difficulties (maybe even to fight a minor god) in order to find out who and why did they stole the vassel.

The players will be able to choose between 4 kind of guardians, fire guradians, ice guardians, earth guardians and wind guardians (if they wish to) This guardians have one special technique related to their element (example: fire punch)

If you don't wish to be be a guardian then you can choose to be something else like dark mage (who are not looked with good eyes by the society)