Season 21 lives up to its lucky number with more Golden Buzzers in one night than ever before. It's an evening full of surprises, with a lineup ranging from not one but two dance crews that are not human, to a crossbow stunt duo taking the stage.

Auditions heat up with a fire-shooting all-female quartet, a pair of comedic illusionists with a cardboard box and a chain reaction machine 12 days in the making that features the judges as props.