The Bet (Zutara fanfic)

It's Katara's first year at Wan's Bending Academy. A school where only a select few from all over the four nations are accepted and get to learn from the best masters. Being the last bender from the south pole, Katara is eager to learn more about the ancient, sacred art of bending. But it turns out, life at the academy might not be as easy as she thought. (Characters and world belong to the ATLA creators).