The Adventures of Penny, Part III

I didn't manage to conclude Penny's saga in part 3, so this won't be a trilogy after all. Thanks to Jon, Zombie Ninjas have entered the plot. Hope you enjoy how I managed to work them in! Ellen, your plot twist will come in during part 4!
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Penny was speechless. Now she was going to have to help Hazel with her crazy plan?

“But wait, Hazel. Just wait !” said Penny. “Couldn’t we just make Skippy throw up? You know, then the chocolate poison won’t harm him any more.”
“Oh, I already thought of that, Penny, but Skippy’s inhaled and digested too much of the chemical for that to work. I induced vomiting about half an hour ago, and it didn’t work.” Hazel said, matter of factly.
It shocked Penny how calculated and methodical Hazel had become all of a sudden.
“So, what is it that I would have to do, if I were to help you?” Penny asked reluctantly.
“Well, there’s these Zombie Ninjas…” Hazel began.
“Zombie Ninjas??!” Penny asked, shocked. “Are you feeling ok, Hazel?”
“Penny, your funny logic isn’t gonna be of any use at the moment; and believe me, I would know. So, just go with me on this, o.k.?”
Penny regretfully nodded her head, not fully trusting Hazel.
“Anyway,” Hazel continued, “the Zombie Ninjas…. There are gangs of them in downtown Pentragopolis, creating all sorts of trouble. Anyway, to stay alert and out of the watchful gaze of the P.P.D., the Zombie Ninja Gangs have an underground market of Nutty Neurosa Nectar. It keeps them awake and alert if they need it. They have to be completely on their toes at all times to execute their complicated ninja moves! Now, here’s the part that makes it interesting for us: the Zombie Ninjas have also perfected the system for creating the antidote!”
“But why?” asked Penny. “Why would they want the antidote? Nutty Neurosa Nectar isn't life threatening for humans, is it?”
“No, it isn’t. But, the Zombie Ninjas can’t sleep without the antidote. They’ve become so hooked on it that they need the antidote to calm down. Don’t you see, Penny? They’re our only hope.” Said Hazel, with a tear in her eye.
“Ok, so why don’t you just pay them off for the recipe for the antidote?” Penny asked.
“Because, Penny!” Hazel exclaimed, frustrated by Penny’s lack of knowledge about the underbelly of the criminal world in Pentragopolis. “Because the deal could go sour… and these are ninjas… they could hurt me… and I’d be willing to bet they aren’t always cool, calm and collected.”
Hazel lowered her voice a little, then continued. “And you, Penny... You exhibited some killer fighting skills on me earlier. Didn’t you get combat training as a kid?”
“Yes.” Penny acknowledged reluctantly. She always knew that some time the day would come when she would be forced to enter into a real fight, one that mattered, with her combat training. And this was the day.

Without another moment’s delay, Hazel and Penny snuck out of Penny’s bedroom window. The sun was beginning to set, making both Penny and Hazel secretly wish that this had turned out to be a simple, easy day like any other. Penny also hoped against hope that it wouldn’t be dark by the time they got to downtown Pentragopolis.
At least I’ll have the element of surprise on my side against the Ninjas, thought Penny.