The plot starts from a laboratory far from the city, directed by scientist Amy Zahn, she works with her assistant in search of the creation of a formula that, when completed, will make women stop being "the weakest sex" and being as strong as men, her assistant warns you not to take the potion because it has not been tested, but Professor Amy Zahn ignores the warning and ends up drinking the formula, which makes her a giantess, ends destroying her laboratory, she becomes mentally evil, and after