Jai, Luke, and Beau are the older brothers of little four-year-old, Avi. They're teenage boys who are part of a YouTube group called the Janoskians. With a mom that's always traveling for work, and never home, Avi's three older brothers are all she has to take care of her. With family drama, hospital visits, and toddler tantrums, will the Brooks brothers be able to handle it all?