"American Ninja Warrior" travels back to St. Louis, Missouri where the top 30 competitors from the St. Louis Qualifier tackle the St. Louis Finals course. They will face the Salmon Ladder, Rumbling Dice, Crazy Cliffhanger and Spider Climb. The St. Louis competitors will vie for a chance to compete in the Las Vegas finals, to win a cash prize of $500,000 and the title of "American Ninja Warrior."

The top qualifiers in Denver now face the final course, hoping to punch their tickets to the finals in Las Vegas.