Nate was walking a wooden path in the park not far from his house when he noticed the small, silvery metallic box sitting in the middle of the path, almost as if it had fallen off someone's cart or something. The chubby young man walked over and picked it up. He looked over the box, no more than four inches wide on any side and shiny silver in color. It was unlike anything he had ever seen before. He decided to take it home with him and turned to head back to his house.
He walked into his home from the back door, walking through the dining room into the living room. He set the box down on the coffee table and looked at it. He wondered if this was one of the boxes he heard about on the internet. He never believed those stories until now, but it seemed like it might be. It was only a moment before the box started vibrating violently on its own, sliding off the coffee table and across the floor. He watched in shocked awe as the box started growing and expanding from a small box , changing shape and growing into a large, rectangular box, not unlike a phone booth. Nate stood up and walked around the box, checking it out. When he got to the front again, a light screen light came emitting out the front, running over Nate from top to bottom. The front of the box began to shimmer as an image appeared on the front of it of Nate, just as he was now. He noticed the image began to change as his body became leaner and more muscular. Nate couldn't help but smile, he looked good in that image, even sexy.
The front then folded open, revealing the interior of the box, matching the exterior. Nate was a bit apprehensive but slowly stepped inside. As soon as he did, the door quickly snapped shut, plunging the booth into complete darkness. Soon a white light began to fill the box, becoming brighter and brighter until it became blinding. Nate cried out as every inch of his body began to feel as if it were burning. He felt his entire body changing. His body tightening up, his muscles growing. After a moment, the light died away and the door opened. Nate carefully stepped out, sweat dripping from his body. He realized he wasn't wearing any pants and looked into the booth, seeing them clumped in the bottom of the booth. He walked over and picked them up quickly. After that the booth closed again.
He noticed he felt decidedly lighter on his feet and his 4XL shirt felt incredibly loose on him. He ran to his bedroom and looked at himself in the mirror. He took off the t-shirt and tossed it aside, standing there completely naked. There wasn't a single ounce of fat on his body at all. He was positively ripped with well defined abs, large pecs and biceps. He couldn't help but stand and flex a bit, checking out the body he never thought he'd have. His glance then turned back to the living room and the booth standing in the middle of it. If this could transform him into the body he always desired, what else could it change.
Nate walked back into the living room and stood in front of the box as it scanned him again. Once more an image flickered into view of Nate in his newly transformed body. The image began to shift and change though and he watched as he slowly became...