Summary: "I'm sorry I need to leave, but I think that we both need time, so I'm leaving for the city where I can forget it all." Only one problem, what city is that? And Phineas has to find her, or lose her forever.

A/N: Alright, I'm trying to finish off old stories as fast as possible so I don't feel like a lazy git. So if these chapters feel rushed... they probably are.

I do not own Phineas and Ferb. All © go to Dan Povenmire and Jeff "Swampy" Marsh.

Chapter 13: On To Israel

Phineas got onto the train, preferring that to running across an entire continent. Not that it wouldn't be possible in a matter of minutes, but the train gives one time to do other things, such as create a DNA tracker to help locate Isabella...Christine.. person...

"You know, I really hope that guy in Beijing was talking about Isabella and not some other girl... That would be embarrassing."

It took Phineas most of the night after boarding the train, but finally, he did it. He made a fully functioning DNA scanner by modifying his computer and adding to it with bits and pieces of bolts and stuff that he found at the bottom of his backpack. Phineas wondered where all this stuff was hidden in the backpack... At the rate he was emptying it, it could hold an entire sink without needing to conform to the shape of the sink.

Just as Phineas got to Lhasi, his cell phone rang, "hey Ferb, what's up?" Phineas asked as he picked up the phone.

"PHINEAS FLYNN YOU ARE IN SO MUCH TROUBLE YOUNG MAN! WHERE ARE YOU, YOU'RE COMING HOME AT ONCE!" Phineas' mother Linda was shouting through Ferb's phone.

"Oh uh... hi mom," Phineas started sweating as he got off the train and looked around. "How's it going?"

"How's it going? HOW'S IT GOING?!" Linda was obviously upset. "YOU DISAPPEAR ON US AND PUT A ROBOT IN YOUR PLACE? I'LL TELL YOU HOW ITS GOING AS SOON AS YOU GET HOME. NOW WHERE ARE YOU? I'M COMING TO PICK YOU UP RIGHT NOW!"

"I'm uh..." Phineas began. "In Lhasi."

"...what?" Linda asked of her son.

"Lhasi... Tibet," Phineas explained for her. "I'm in Tibet."

"Phineas Flynn, that's not even funny," Linda was trying hard to not strangle her son through the phone. "If I have to activate the GPS device in your phone and track you down, you're going to be grounded till you are retired!"

"Well, as long as Isabella comes back with us, I'll gladly remain grounded until I'm ninety," Phineas said without remorse as he picked up his DNA tracker. "Yeah, she's was here, but she moved on.. hm, this train only goes East/West... so... West still... wait... isn't Isabella part Jewish? Maybe she went to Israel... Alright mom, I'll come home when I find Isabella and not before that!" Phineas hung up the phone with a determination in his eyes that show nothing is more important than the task at hand.

Phineas purchased another ticket bound for Israel, sure that she would go there, and ran to board the train just as it was leaving the station. "Alright Phineas, on to Israel... please be there Isabella."