A Walk in My Shoes

Hiccup has had it pretty rough in his short life. Raised in poverty, fed through borrowed money...when his parents suddenly pass, he is left with a huge debt to pay and no way to pay it. Meeting a winter spirit who seems to have it all ends with the two making a dangerous trade-off...of lives. Now the two must fix each other's problems, or end up stuck as the other for good. AU.