1. Adam
Adam is an athletic guy. He likes to run when he can. He also would like to grow a bit of muscle. Little did he know the pill he one day takes makes him grow more than he expected. And little did he know he would like it...
2. Jonathan
A mysterious man. Real name unknown. He seems to have discovered a way to achieve rapid muscle growth, and is seemingly spreading it around. His motives are still unclear....
3. Brian & Mick
Mick (tall guy) and Brian (shorter guy) are friends, but with different tastes. Brian is into big muscle. So Mick decides to surprise him by getting an experimental drug called "Muscle-Now" which requires sexual stimulation to work. Something Brian is willing to do after seeing a preview of the results...
4. Officer Nick Banner
Nick is a hardworking officer. He trains his body well and keeps fit for his health and his job. One day on patrol he spots a suspicious fellow. This person happens to have a drug that Nick accidentally gets into his body. He then unlocks a part of him that was always there, but he didn't know he had...
5. Sebastian
Sebastian is a freshman student at a college where he lives. He is quite book smart and excels in various academics, but he is not quite confident about his body. He experiments with various projects in attempts to change that. One day he modifies a serum given to him by a fellow scientist, one with supposed growth properties. With hesitation he decides to drink it and see the results...
6. Tristan
Tristan is a confident guy. He works out a lot and loves being praised for his physique. So much so, he doesn't mind being muscle worshiped by anyone, male or female. One day someone promised him he'd make him grow huge if he let him be worshiped. He agreed, and his wish came true...
7. Max
Max is the quarterback of his football team. He loves the idea of growing huge an overtaking his opponents. He also loves the idea of growing in front of the spectators at a game, if he could. His coach one day makes him take something that made him sweat and feel a certain feeling after a game...
8. Nate & Jacob
Nate (tall guy) and Jacob (shorter guy) are two fellows on a date to see the stars. A shooting star appears when the two are together stargazing. Being growth lovers, each wished for the other to grow massive, with the ability to make themselves grow even more through consuming each other's semen.
9. Ricky
Ricky one day comes home from a day of work and just wants to relax. He grabs the first cold drink he sees in the fridge without noticing the warning label. His idea of relaxing seems to be to slowly grow huge as what he is dreaming about during his nap on the couch seems to be happening to him for real...