Fan favorite, the Mighty Kacy Catanzaro returns for the Houston qualifiers. Kacy Catanzaro, the first woman ever to complete the American Ninja Warrior course, is back, along with veterans Brent Steffensen and Sam Sann to compete for $1,000,000 in the world's most difficult obstacle course. Will the never-before-seen Tilting Slider, Cargo Crossing, and The Swinging Spikes stop the Mighty Kacy on her quest to conquer Mount Midoriyama?