Kitty helps Dudley conquer his fear of thunder in order to stop Bird Brain from using his thunder cannon to bury Petropolis in an avalanche. / Snaptrap and Dudley’s mom, Peg, have fallen in love. Things couldn’t get any worse, or so Dudley thinks, until Snaptrap is inspired by his new girlfriend to turn a new leaf and becomes the newest member of T.U.F.F.