It's the final night of the "American Ninja Warrior" National Finals, where top competitors from the City Finals tackle the last three stages of 'Mount Midoriyama.' Competitors who survive Stage One will take on Stage Two, and possibly Stages Three and Four. The redesigned Stage Two includes five brand new obstacles- Giant Ring Swing, Down-Up Salmon Ladder, Hourglass to Atari, Double Wedge and Wall Flip. Stage Three features the new Keylock Hang, Curved Body Prop and Walking Bar. Lastly, if any competitors conquer both stages, they will attempt Stage Four with a cash prize of $1 million at stake and claim the title of "American Ninja Warrior."