Hogwarts is having a five-year reunion for Lily and James' graduating class. Both of them are invited. They, along with around 20 others, have to spend three weeks together in a half castle on Hogwarts grounds. What will happen?

James and Lily finally get together...for a few hours! Then, something happens to Lily, and James is forbidden from trying to find anything out about it! Who does he go to for help and what sacrifices will have to be made? No one ever expected this!