It was a stone damp room, inside which our heroine was, her hands were shackled. "Hmmm..." Being sleepy, she moved her hand slightly and, hearing the metallic sound of shackles, said: "Huh? Chains!?! Where am I?!?" Then, hearing a "click" sound, she asked: "What is that sound?" And when she saw two test pipes with needles connected to two green solutions, asking: "W-W-What is that?" - the needles stuck into her arms. "Augh!" And then this green fluid was entered into her, it began to flow into her body. You could see the green liquid being spreading through her veins. She says: "I-I-I do not like this!" While our heroine was figuring out what was going on, her body began to change. The green stuff made her muscles more powerful with each second. Her arms, her chest, her back, her abs, her thighs, her calves... her butt... all the muscles on her body began to tense up and expand. Her waistline became straighter while she's getting taller as well. "Gaah!!! M-M-M-Make it stop!!!" It was painful, but, somehow, tolerable too. As her muscles continued growing, she started showing off her curves. Finally, she completely transformed into a fit and beautiful massive muscular woman. "Hnghh!" Her muscles were so powerful now that she was able to easily break chains. "Grr..."  She starts trying to break free from the shackles. And some seconds later... CRACK! & CRACK! She managed to break the chains.