Chapter 1: Before the Beginning

It was just a normal summer day for Phineas and Ferb. The two had made their invention for the day, and it had just disappeared. Candace, who had gotten her mother to come home to see it, had once again been baffled by its failure to exist. Linda, after so many days had gotten fed up with Candace's constant "psychotic delusions". Candace was on the verge of breaking down into tears. Every day was the same. She would see some crazy, giant thing her brothers were making, and she would call her mother. Right when she comes home and they were about to be busted, everything just randomly disappears with no clue as to where they went. Well, this is the last time this is going to happen for her. "Those brats somehow get away with everything they do, every single day! But tomorrow is a new day. And with my newest plan, those two will never escape their BUSTING!" Candace said these words as she went into her room and pulled out a notebook, a set of blueprints, and a video camera (which, from previous experience, she had made sure to be waterproofed, fireproofed, crush-proofed, and "proofed" of pretty much any accident or natural force whatsoever). She had been planning this day for months, and it has finally come. She went to bed with a bitter smile on her face, knowing what tomorrow would bring for her and her entire family.

Meanwhile, at Doofenshmirtz Evil Inc., Heinz had his own daily routine. Every day, he would try to take over the tri-state area to no avail, as his nemesis, Perry, would thwart him every day and leave him in immense pain. However, tomorrow would be different for him, too. He pulled out blueprints of his own, with large letters reading "THE APOCALYPSINATOR" on it. He also had a metal crate with "ULTIMATE PLATYPUS TRAP" branded on it next to him. "Tomorrow is my final plan to take over this pitiful tri-state area! I still can't believe it's come to my most diabolical of plans, but this must be done if I am to ever become supreme ruler of the world…The last two and a half months have been a complete failure for my various attempts, but tomorrow marks the start of a new plan. A plan that may be too evil for my standards, but nonetheless, it's needed. Still, Perry, you will definitely not thwart me tomorrow, so be prepared. Be prepared for…the beginning." He had cleared the entire building besides what he had now, and sent everything he owned and loved into his DEI truck. Among these items was his beloved daughter, Vanessa, who at the moment was fast asleep and had no idea what was to happen tomorrow. The only things to be left in the building were a television screen, the to-be-set-up platypus trap, and the Apocalypsinator. Doofenshmirtz grabbed two cups of espresso, and downed them in about six seconds each. He then opened the two crates and assembled the machines for the rest of the night, into the morning.

Phineas and Ferb were about to go to bed. They were tired after their daily activity, so they were undressing and changing into their pajamas. The two brothers had successfully made every summer day worthwhile, and they could sleep at night easily knowing this fact. They pulled out their empty blueprint paper for the next day, and went to bed, looking forward to whatever good things would happen the next day. As Phineas crawled into bed, Perry went in with him, cherishing every minute of rest with his loving owner. Every day, he had to save the tri-state-area from certain destruction, but he still knew to enjoy the comfort of his back-home life instead of worry about what his nemesis might do the next day. Little did he know that tomorrow would truly be a day to worry about…

Meanwhile, across the street, Isabella Garcia-Shapiro was getting ready to drift off into sweet slumber as well. Every day was great, helping out Phineas and Ferb with their amazing daily projects. However, something was missing. She would show some small degree of her great affection for Phineas Flynn every day, yet he would never notice. In fact, the only way he would ever notice is if she flat-out told him herself, and even then, he might misunderstand her. She'd have to be precise in what she wanted. She'd love to do that, too, but it's not the easiest thing in the world to tell the love of your life that they mean that much to you. However, then and there, after much frustration, she decided what she was going to do. "Tomorrow, I will tell him. Who cares what'll happen next, I have to tell him! I have to! Tomorrow is truly make or break for this young girl's mind. And please, oh please, let it be make! Good night, Pinky, and look forward to what will be the rest of our lives." She went to bed, dreaming of all the things that may happen when she and Phineas would finally be together. Dating, long nights of talking, plenty of kisses, marriage, kids, and growing old together! Oh, joy, how great this will be! She planned out everything in her dreams until it was finally time to wake up and tell him.

And like magic, the entire group of people all had one simultaneous common thought, whether they were asleep or awake:

"Tomorrow's going to be the best day ever."