Leela hums as she rocks her sleeping baby niece, Nila, in a bassinet in the arbor. Telly and Elmo come bounding in loudly trying to offer their help, but Leela insists that she doesn't need any assistance. She's hoping Nila will stay asleep as long as there aren't any loud noises on Sesame Street. Elmo and Telly decide to become the Noise Patrol and keep loud noises away from Nila! They try to use different tools such as binoculars and a megaphone, but Leela explains that the only tools they need are their ears! Elmo and Telly hear sounds coming from animals playing basketball. Luckily, the animals agree to go to the park to play. Next, Elmo and Telly hear Grover blasting a boombox as he breakdances! After a dance-off and a mishap with the controls, Grover realizes that he can't play loud music around a sleeping baby and leaves after putting on his headphones. Next, Elmo and Telly hear hammering from a construction worker who thankfully agrees to leave for lunch. Just when the Noise Patrol is finally enjoying the quiet, Nila wakes up! Leela explains that they actually don't need to be completely quiet. Nila can listen to Leela as she sings her a lullaby. By the end of the song, not only does Nila fall back asleep, but so do Telly and Elmo from their big day as the Noise Patrol!