Roshan, the fire nation guy to the right, was part of the fire nation army and while they attacked the north pole, he got injured and was caught by the people of the tribe and stuck into prison after winning the fight. Naturally, because he's a firebender, guards aren't so nice to him aaaaaand they brag about how they beat him up and eventually the princess, Ahna (the wife of the chief's son), hears about it and feels sorry for him. So she'll come down to the dungeon every once in a while to check on him and to bring him food and finds out that he isn't such a bad guy after all. Yup.

This story/RPG takes place at the Ba Sing Se siege, thirty years before Aang, Katara and all the others meet. Soo yeah no Yue. .O.