Back outside, Ron had returned to the backyard with the brothers and Isabella.

"Hey, where's Perry?" Phineas asked.

"And where the heck is Rufus?" Ron replied "Rufus, where are you buddy? If you come out I'll give you a naco."

"We'll help you find him" Phineas said "we are detectives after all."

"Thanks 'cause me and Kim can't leave without him" Ron replied "I just hope the little guy is all right."

"So then, they re-wired the toaster to work at double its' normal speed" Kim told Candace, "it worked, but it made the toast super burnt."

"It's nice to meet someone who knows what it's like to have mischievous and super smart brothers" Candace replied.

"I'll say, I though I was the only one" Kim added. Then she noticed the activity in the backyard, "what is going on back there?"

"Oh, Phineas & Ferb are playing 'detective'" Candace replied, using finger quotes on the last word "actually, it's nice to see them doing something normal for once, if you don't count the office they built out there."

"I'd like to meet these two brothers of yours" Kim said "if they are like Jim & Tim, I can handle them."

"Suit yourself" Candace replied, as she and Kim left the living room and headed outside. Kim quickly approached the two, while Phnieas inspected the grass with a magnifying glass.

"Very interesting" he said.

"Hi, I'm Kim Possible" she said "You two must be Phineas & Ferb."

"Yup, I'm Phineas and he's Ferb" Phineas replied "and you must be the spy."

"Come again?"

"Your boyfriend Ron mentioned you were on a special mission and that's why you were here" Phineas replied.

"He did, huh?" Kim asked, glaring at Ron.

"No kids, remember, I said 'hypothetically' we were on a secret mission" Ron explained, trying to avoid Kim's angry glare "I already told you we're not spies."

"Oh please, teenage spies" Candace said "that's stupider than the idea of a mad scientist living in our own neighborhood."

"Anyway, Ron and I should be going" Kim said "so about that tire…"

"Already taken care of" Phineas replied "me and Ferb fixed your spy car right up."

"It's not a spy car! I, mean, you fixed it, really?" Kim asked.

"Yeah, these kids are mechanical geniuses KP" Ron said "they remind me a lot of your brothers, except they don't speak in that weird twin language."

"Well, thanks for the fix-up" Kim told the kids "and the hospitality. We'll just be on our way…"

"We can't leave Kim, Rufus is missing!" Ron exclaimed.

"What?"

"Yeah, I left him out here with their pet platypus, and now he's gone!" Ron explained "I bet this is the work of a serial petnapper. Well nobody gets away with stealing my buddy!"

"Calm down Ron, I'll help you look for him" Kim replied "he couldn't have gotten far. At least, I hope not."

As Ron & Kim began to search for Rufus, Phineas turned to his brother and friend.

"Since they're busy looking for that mole rat, they're not going to be able to handle their big job" Phineas said "I know, we can do it for them! We'll find that criminal and bring him to justice ourselves!"

"Isn't that dangerous?" Isabella asked "I mean, we don't know anything about this guy."

"Maybe not, but detectives don't back down in the face of crime" Phineas replied "they use their skills to bring the guilty to justice, and that's exactly what we're going to do. Come on Ferb, we'll need a kit and some kind of trap."

And the brothers and Isabella headed off to the garage.

Back in Agent P's secret lair, Major Monogram was finishing a conversation with his top agent.

"Since the mole rat is going to hear everything anyway, you might as well take him along Agent P. Who knows, he could come in handy."

Perry looked down at Rufus, then back up at the monitor.

"Anyway, we've received word that Doofenshmirtz has recruited the help of an out of town villain, Dr. Drakken, in order to make his schemes more diabolical." A picture of Drakken was shown on the screen "stop these two before they do something real dangerous."

Agent P saluted, then hopped in his flying car. He made sure Rufus was carefully buckled in, then flew off towards Doofenshmirtz Evil Inc.

While this was going on, Phineas, Ferb & Isabella were preparing to head out to track down Drakken.

"Good work on the net Ferb" Phineas said "this thing could hold a rogue elephant. Hopefully, we won't have to capture one of those too."

Since Candace was helping in the search for Rufus, she didn't notice as the trio headed out of the yard.

"Where should we start looking?" Isabella asked.

"We could try that big building downtown 'something, something incorporated'" Phineas said "most bad guys on detective shows are corporation owners who think they can get away with breaking the law."

"I think I know the building you're talking about" Isabella replied "you know, it's been here for a long time, but I have no idea what kind of products it makes."

"Me either" Phineas replied "that seems a little odd, and a little suspicious. Let's go gang!"

"How are we going to get there?" Isabella wondered.

"We'll be going by wagon" Phineas replied, as Ferb brought out a souped-up wagon.

"Phineas, you're so smart…and handsome" Isabella said.

"What?"

"I said 'let's go'" the girl replied.

Identities are revealed in the next chapter. Kim finally learns who always defeats Doofenshmirtz and discovers he's connected to Rufus's disappearance…and Global Justice. Also, Candace uses the Internet to help her remember who Kim is and learns her secret; how will she react?