Gloria and Tucker are marked for death after they come face to face with a gang that stole plutonium and abducted a child girl genius to build a bomb. In their premiere escapade, "The Big Band," Gloria's 13-year-old friend, Jimmy, who is studying for his doctorate at Berkeley, is ushered away by a strange trio of villains. Gloria tries to convince Tucker that Jimmy has been kidnapped, but Tucker doesn't become suspicious until two goons lock him in a closet at Gloria's apartment. Meanwhile, Tucker's boss, Capt. Lombardi, learns of the hijacking of 30 pounds of plutonium. Things really heat up when Gloria and Tucker discover that Jimmy can build a bomb that could wipe out the entire city with just eight pounds of plutonium.