Dr. Heinz Doofenshmirtz was enjoying himself at the Flynn-Fletcher party. He had made polite conversation with everyone, and had not tripped, stumbled, or ran into anything once. Neither had anything fallen on top of him. It had been a successful evening indeed. He was also secretly helping with the clean-up by picking up all the empty plastic cups. He had enjoyed his evening out fully unaware that a platypus had watched his every move. He was especially impressed with the fireworks display, amazed that two teenagers had worked with the dangerous explosives and had not got hurt. He was also glade to not be attached to the rockets as he had been so many times before.

Heinz was looking skyward with everyone else when out of the corner of his eye he saw it. The last cup. It was perched on one of the many speakers being supported on the tiny stage. He had to have that cup. Taking a quick look around to make sure no one was watching him he snuck over to the stage and climbed up. Hiding behind the equipment he looked around again. Still no one was looking in his direction. He tiptoed over to the speaker and grabbed the cup.

Mission complete.

He turned around to leave but found his way blocked by the boy's pet platypus.

"Oh, hey there, little guy." He said to the animal, who just stared back up at him blankly.

"I just had to get this last cup, it's part of my new...ah, good deed for the day." He corrected himself. Why would he want to tell a platypus about his new scheme?

He figured it was just out of habit from talking to his nemesis. Unlike Vanessa he had not heard Phineas call the animal by name and so did not suspect to think that this could be his nemesis.

"Well I should be going now" he said to the animal, again unsure why. He started to walk away but tripped over one of the many power cords that decorated the stage. Because the platform was so small it was enough to have him roll over the edge. He landed in a seated position; his legs sprawled out in front of him, his head resting on the stage.

A forgotten wrench had careless been left on the corner of the table on which the CD player stood. The force of Dr. D's fall was enough to make the wrench bounce off the table and land a few feet too far to the left, causing the wrench to land on the head of Dr. Heinz Doofenshmirtz. Thus knocking him unconscious. Perry feeling that his work here was done went back inside the house before anyone noticed he had left.

Heinz awoke to several people standing over him, his vision was blurry and he didn't know why. The last thing he remembered was getting the cup. The cup! No, he still had it in his hand. It was cracked but would still serve his purpose.

"Dad? Dad? Can you hear me, are you alright?" Vanessa asked she was worried about her father, he had not been inebriated and wondered what could have cause him to pass out.

"Dr. D, how many fingers am I holding up?" asked a sweet voice. The speaker was Isabella, she had after all had great first aid training being a fireside girl scout leader and was hoping to get into nursing school upon graduation. She held up three fingers on her right hand.

"Eight." Said Heinz, "but how did you get them all on one hand?"

Isabella rolled her eyes. "Ice me" she said and Ferb handed her a face cloth filled with ice cubes and placed it gently of the large bump that had formed on Dr. D's head. She turned around. "He should be fine" she said with a wave of her hand.

Vanessa looked sceptical.

"No damage done."Isabella assured her, "he wasn't out very long, I suspect this is what caused him to black out" she said picking up the wrench. She handed it to

Ferb "you really should be more careful where you leave your tools."

Ferb shot a dark look at his brother "actually I-"

But Isabella cut him off turning back to her patient.

"Now Dr. D when you get home just take some of that pain medication the doctors gave you earlier today, go to sleep with an ice pack on that bump and you'll be good as new in the morning." She flashed him her sweetest smile.

"That's good, I have a standing eleven am appointment I can't miss." He said holding his head in pain.

"However you probably shouldn't drive home." She added

"I can do that." Vanessa volunteered

Vanessa and Charlene helped Dr. D to his feet and steadied him between them to walk over to his van.

"Here dad let me take that "Vanessa said reaching for the cup still tightly held in his hand.

"No! I need it."

"It's just a plastic cup dad-"

"Let him keep it dear, you're father's had a rough night." Charlene said soothingly.

"I'll come straight home mom, I'll return the van to dad tomorrow."

"Okay dear, did you want me to wait up?"

"Mom!"

"Okay, I won't. Good night sweetie, good night Heinz, and do as Isabella said and take you're meds."

Phineas and Ferb were in the process of bringing all the electrical equipment inside but had decided they would leave the rest of the clean up for the morning.

"Phineas, have you seen my cup? I left it on that speaker there, I think there was still some pop in it."

"I didn't take it." Phineas replied, "And you know you shouldn't have had it up here anyway, what if it had of spilled?"

"So, what happened with you and Isabella?"

"We held hands."

"And?"

"And, I kissed her."

"Nice."

"You and Vanessa?"

"We didn't really talk that much."

Phineas laughed, "I guess some things never change." He said nudging his brother as they walked back into the house.