Sally stood over the unconscious body of her now ex-boyfriend and watched him for a few moments. When she was sure that he was breathing she looked around. Janey was slowly getting up. Sally considered scaring her a little more, but then became very curious about what exactly had just happened to her. She went back to Brad’s body and pulled his football jersey off. Slipping it on herself she found that the shoulders were far too tight, so with a quick motion she pulled them off at the seams. The shirt was pulled taught across her massive bosom, and her enlarged pectorals didn’t make it any easier on the fabric, but it stretched enough to cover her chest. Her stomach, on the other hand was still exposed.

She looked over toward the house where the green light had flashed. At first glance she didn’t notice anything out of the ordinary, but as she stared she thought she could see someone watching her from one of the upstairs windows. She decided to find out if they knew anything about her transformation.

While walking across the park toward the house Sally reveled in the way her new body moved. Every motion was effortless and graceful. She could feel her hips sway and her legs pump with each step. Her exposed shoulders were broad and her huge breasts jiggled slightly under the tight shirt with each stride.

As Sally arrived at the street that separated the house from the park she was certain that there was a face in the window watching her. Then, just as she was about to cross the road, the face vanished. She then stepped off the curb between two cars and decided to check on something else she was curious about. On her right was a large Ford SUV. She reached down under the rear bumper and gripped the frame as best she could. With one quick move she lifted and the entire back of the vehicle rose off the ground. Her face lit up with delight as she realized that it was fairly effortless. She adjusted her hands and tried again with one hand instead of two and found that she was still able, with a little more of an effort, to lift the SUV off the ground.

“This is amazing!” she said out loud to herself. “Now to find out where this gift came from.”

As Sally turned to face the house again she noticed a bright flash of green light come from the upstairs window again. She wasn’t sure if it was just because she was much closer to the house this time, but the light was much brighter this time. And this time nothing struck her, so she wasn’t sure exactly what that meant.

She crossed the street and approached the front door. Pausing for a moment Sally listened. She could hear deep thudding sounds as well as what she thought was laughter. She reached forward and rang the doorbell.

The deep thuds became rhythmic and steadily louder until the source was right behind the front door. When the door swung open Sally was stunned by the sight before her.

The woman in the doorway was a few inches shorter than Sally, but was much bigger in every other way. If Sally was large this woman was enormous. She had wrapped a bed sheet around her huge frame in a make-shift toga, but much of her flesh was still exposed. Her muscles bulged so greatly it looked as if she were smuggling pumpkins under her skin. Her shoulders were wider than the doorway in which she stood. Her chest was a shelf of pectoral muscle that sat more than a foot beyond the tip of her chin, and then her boobs began and they were nearly the size of beach balls. Sally stared in wonder at this goddess of muscle before her. She was amazed by this woman’s legs. Her calfs were far larger than Sally’s biceps, and her thighs were so large they pressed into each other.

Sally didn’t know how long she had been standing there in silence, but she suddenly realized it had been quite a while. She had to say something. “Uh...,” she stammered, “I guess I came to the right place. Do you know what happened to me?”

The woman laughed and Sally noticed her face for the first time. She was a lot younger than Sally had originally thought.

“Wait a minute,” Sally said, “I’ve seen you around school. You’re.... um... Amanda, right? How did you- Well, how did we get so big?”

“Do you like it?” Amanda asked.

“Well, yeah! I love it. But I’m just wondering how it happened.”

“I found a strange gun earlier today and I was nervous about testing it out. Then I saw you and Brad and Janey across the street and you looked pissed, so I thought you could use a little boost. I’m glad I tested it out too, because you reached superhuman levels with just a blast of ten percent of the guns power. I look like this from a thirty percent power shot. I have no idea what a full power blast would do.”

“So I was your lab rat? You could have killed me!”

“But you’re fine. You’re better than fine. Besides,” Amanda said flexing her arm. Her bicep swelled so large the peak crested above her hand and she unfolded her fist and caressed the giant muscle. “What are you going to do about it, fight me?”

Sally quickly let her anger go as it was obvious there was nothing she could do against this giant. “Where’s the gun now?” she asked.

“I’ve hidden it somewhere inside. Don’t worry about it. Anyway,” Amanda said smiling again and releasing her flex, “we should be friends. There’s a lot of fun two sexy beasts like us can have.” Amanda reached forward and ran her hand over Sally’s cheek then down to her large boob which she gave a little squeeze. Sally’s nipples grew hard and she let out a sensual sigh as electricity ran through her body.

“You’re right.” Sally said, “But what exactly did you have in mind?”

Amanda’s smile grew even wider.