When an eldest sibling is locked out of the house by his younger twin brothers during his very first time babysitting, four Band of Bigs agents—Tucker, Rosa, Chester, and new-recruit Jamie—are on the case. But their job is complicated by three League of Littles agents—Lexi, Eli, and Mo—defending the younger siblings inside. And it just so happens that Mo is Tucker’s little sister. When siblings go head-to-head, things are bound to get a little messy. Okay, maybe a lot messy.Full of hilarious hijinks, action, friendship, pets, and cookies, this graphic novel is sure to delight young middle graders. It is an excellent choice for newly independent readers and fans of Babymouse, Lunch Lady, and the Bad Guys.

ISBN: 9780063285286

FOC Date: 6/1/2026
Release Date: 6/24/2026