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I'm a scientist that is working on a device that make humans grow. Everything action has a consequence. According to my researches, extreme growth can lead to sensitiveness in the genital area, making the subject a sexual maniac. I'm ready to suffer the consequences though, everything for science! The procedure finally works. I start to grow and become desperate to touch myself. I release myself from the tapes that were keeping me still for the safety of the staff and my own. I grow so much that the laboratory explode. I can't stop masturbating until I cum so hard. When I stop to touch myself, an unexpected effect appears. I start to shrink. I become minuscule. That is a non-expected reaction of my body. I don't know what to do, the lab is gone and I'm microscopic. Then, I start to masturbate again, just to find out that this is what it takes to go back to my real size - GIANTESS!