Qualifier 1

S12 E1: American Ninja Warrior returns for Season 12, inside the Dome at America's Center in St. Louis. The series will feature the nation's top athletes competing in Qualifying, Semi-Final and Finals rounds of competition. To determine the winner during the Finals, the top eight ninjas will compete in a playoff bracket where they will race head-to-head on the Power Tower and the winner will earn $100,000. In this first round of Qualifying, the ninjas will face up to six challenging obstacles including Weight For It, Ring Chaser and Rib Run, which are new to the course this year, in addition to fan favorites Shrinking Steps, Slingshot and the iconic Warped Wall. Matt Iseman and Akbar Gbajabiamila host and Zuri Hall reports from the sidelines.