S9E30 : Grating Spaces!

Our heroes have finally made it back to Pewter City, where Brock once again comes home to find the Pewter Gym looking stranger than ever. When he gets in the door, he discovers that his mom and dad are headed off on a free prize vacation, leaving the Gym in the care of three suspicious Gym remodelers who promised to make the Pewter Gym fashionable. His parents even took his Ludicolo to carry suitcases! Of course, it's all another Team Rocket scheme in disguise.