When Hermione wakes up on May 3rd, she doesn't remember a thing from the night before, apart from the fact that she was extremely drunk. When she realises that she isn't in her own bed and realises whose bed she's in, she vows never to tell anyone what happened. That turns out to not be as easy as it seemed though.

Hermione does something she never thought she would do, after falling in love with the wrong person. The summary doesn't reveal too much, so you'll have to read to understand more :