I'm Back, Linda!

Heinz runs into Linda on the way from the 3rd Inator Contest, and Phineas and Ferb make a holographic reality simulator.

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Plot Details
Heinz is returning from the Third Annual Inator Contest and runs into Linda, who was returning antoher one of those novelty lawnmowers that Lawrence bought. Meanwhile, Phineas and Ferb fused their nervous systems with their dad's laptop and read about virtual reality simulators. They decided to make a holographic one that is so realistic, you're convinced you're really there. Phineas wanted a bunch of Bulgarian folk dancers in every environment, but that wasn't in the final one. The final version included a part where you can see anyone, anytime, anywhere. Candace tries to bust them, but accidentally gets caught in it. Heinz and Linda are catching up on each other when Perry sneaks in and notices her. He switches into his "mindless animal" cover the instant Linda looks down. She notices Perry and wonders how he got there. Thinking he followed her, she gets back to catching up with Heinz.

Candace winds up in the virtual Tri-state area dump and notices a dirty video disc. She gets out and the boys go in, search for Linda on the searcher, and notice her with Heinz. They call her and ask her to come home. She does, with Heinz tagging along. they arrive at the Flynn-Fletcher house, and she sees the virtual reality simulator. At the Inator contest cleanup, fellow mad scientist Rodney examines Doof's Cardboard-inator, which transforms anything into a cardboard cutout, and accidentally fires it, which hits the virtual reality simulator, turning it into a cardboard cutout. A wind blows it over, and Heinz meets Phineas, Ferb, and Candace.