Rudi, who thought he'd become a famous detective after crossing over to a parallel England, received a letter delivered by an owl. He packed his bags and bought train tickets to leave Europe, but was stopped before he could leave... Thus, he became a first-year student at Hogwarts, beginning his magical journey in another world... Note: This book is not a pure HP fanfiction, so please don't bother me with nitpicking details from the original work.