Little did Ken and his best buddies know just how wild their summer vacation was about to become. Ken, Orv, Horseshoes, and Bo were planning to spend their days perfecting a few of Orv's crazy inventions. Instead, they find themselves joining forces with a top-secret group of good guys known as Mongoose. Their mission? To foil the latest nefarious plot hatched by the evil organization Cobra. Before long, the boys officially form their own heroic squad: Volunteer Agents Crusading Unsteadily Under Mongoose, better known as V.A.C.U.U.M. With the help of their brilliant assistant Mary Evans, a modest fleet of vintage cars, and an actual World War I airplane, the crew is ready to take down the bad guys. Written by the clever mind behind the Encyclopedia Brown series, this hilarious tale is packed with friendship, wild ingenuity, and smashing achievements. Get ready to laugh out loud as you follow these four unlikely secret agents on a bumbling but brave quest to save the day. Will their homemade gadgets and sheer determination be enough to outsmart a team of professional villains?