Bryan and his three friends, Josh, Shorty, and Tim, find adventure at every turn. After a Fourth of July fiasco, when Bryan accidentally sets off the community fireworks, the boys earn the nickname The Bomb Squad. Although the neighborhood holds a grudge, this doesn't stop the boys from investigating a mysterious new neighbor who might bring trouble to their town. The Bomb Squad sets up surveillance to discover his secrets. Can the boys redeem their reputation in the neighborhood before Shorty eats all the snacks? Their round-the-clock watch gets them in trouble again, yet they learn enough to know the investigation isn't over. The boys uncover some weird clues, and even Max, Bryan's dog, gets in on the action when he finds a key that unlocks the mystery. When some strangers show up, and a fight breaks out, the boys must lean on each other like never before. Will The Bomb Squad keep the neighborhood safe, or will trouble explode on them again?