Jack Donovan (Donohue), a riveter working on the construction of a high-rise building, is distracted from his work by spying through a nearby window on a lissom young woman Mary (Rolf) as she rehearses her tap-dancing routines. When she finishes, he pauses to give the unsuspecting Mary an ovation of cheers and wolf-whistles, but in the process loses his balance and falls to the ground, breaking both ankles.