Keswick is convinced by Snaptrap to build D.O.O.M. a new doomsday device, after he starts feeling unappreciated at T.U.F.F. / Dudley hasn't told his over-protective mother, Peg Puppy, that he is a T.U.F.F. super spy. However, when the maniacal genius Bird Brain takes Peg prisoner, Dudley must save her and, in the process, reveal his career as a crime-fighting agent.