"Do you know the enemy? Do you know your enemy?" The band One Direction consisted of Zack the lead singer, Louis the piano player, Niall the lead guitarist, Liam the drummer, and Zayn the bassiest. When all of a sudden Zack dies in a freak accident so they get a new singer Harry Styles. The bad thing is that Zack and Louis were engaged so will Louis accept that Zack is getting replaced by Harry.