Night of Champions (2013) was a professional wrestling pay-per-view (PPV) event produced by WWE. This year's event took place on September 15, 2013 at the Joe Louis Arena in Detroit, Michigan. It was the seventh annual Night of Champions event, and the eighth pay-per-view in the 2013 lineup. The theme of this PPV was that every championship in WWE was defended.The event received 175,000 buys, which was down from the last year's event of 189,000.