Irving discovers Perry is an Secret agent and succeeds in showing evidence. Plot: Phineas and Ferb are building Bumper Cars, Irving shows up to them. once again, he tells them where Perry is. Irving actually saw Perry had an hat as Perry goes to his lair, Irving tells Phineas that their platypus is an agent, but he didn't believe him, Irving goes to follow Perry to Dr. Doofenshmirtz's evil inc. Dr. D Traps Perry on an hanger. Irving Enters without the two knowing, he calls Phineas and Ferb over. Phineas and Ferb rush over to Dr. D's evil inc to meet Irving there. Perry escapes and punches Dr. D like usually. Irving, Phineas and Ferb enter, Phineas and Ferb see Perry fighting Dr. D, Perry sees them what they saw and realizes he got cought after he toke out Dr. D, Phineas cries because his p