"The film depicts amateur mixed-martial-arts fighter Orlando Friol alongside his trainer and mentor Diego de Vera of Miami's Knockout Zone Gym," explains frontman Ian Astbury. "The song's title is an acronym for 'Greatest Of All Time'. We were tapping into The Cult's identification as cultural outsiders, revealing the mystique of a lone fighter who, through discipline and integrity, rises up against all odds."

Produced by Bob Rock, "Hidden City" is billed as the third and final installment in a trilogy of recordings that began with 2007's "Born Into This" and "Choice Of Weapon."