A 72-year-old former plumber pursues his passion as an opera singer; actress Betty White surprises an 80-year-old tap dancer; gospel singer Shirley Caesar; an 81-year-old daredevil grandma.

Special guest appearance by four-time Olympic gold medalist Simone Biles; the world's oldest gymnast; the world's oldest living showgirl; a gospel singing quartet; a spoons player from Australia; the world's oldest daredevil acrobatic hand balancer.