Harry Potter and The League of Legends

When days finally became peaceful, Harry finds himself thrust into an adventure of a life time. Without warning, he's sent to Valoran, pulled away by a mysterious artifact. What is going on? Why is Harry now in one of his favourite games? And what does he have to do before he's sent back? And what does it have to do with his own worl? No pairings, Good!Dudley. Rated M for safety.