They walk a short distance, but a large Wobbuffet statue is blocking the way. Ash spots a little plaque in front, and it reads to place your prized Pokémon here for some superstitious thing. Ash puts Pikachu on top and the statue’s eyes glow. Suddenly, a spring shoots Pikachu into the statue’s mouth which reveals it’s another one of Team Rocket’s traps. The statue drives away using its concealed treads. Ash has Bayleef use Razor Leaf at the bot, but it proves ineffective against the mecha’s titanium walls. While driving off with their catch, Jessie recalls the time she couldn’t get a new pencil case, supposedly indestructible to even a Snorlax stomping on them. Janina and Brock call on their Onix, but the joint Tackle fails. The Wobbuffet mecha persists to scale one of the cliffs, but a Steelix emerges from the ground and knocks the mecha downwards. Ash checks his Pokédex for information on Steelix, and soon its Trainer, Jasmine appears on the scene. Brock recites his own Pokédex entry for Jasmine. Steelix Crunches onto the Wobbuffet robot, and eventually it begins to fracture open. Bayleef retrieves Pikachu with her Vine Whip. Steelix sends the robot sky high with an Iron Tail causing it to blow up and send Team Rocket blasting off.
(Source: Bulbapedia)