In the spring of 2011, a radio station in the San Francisco Bay Area made a bold, worldwide prediction that Judgment Day would occur on May 21, 2011. As the date approached, followers of the station's message, led by Harold Camping, prepared for the rapture and the subsequent destruction of the world by fire. This documentary explores the psychology of belief, examining how individuals commit to such public, life-altering convictions and the profound difficulty of admitting when those beliefs are proven wrong.