Elya, 20, is a student and a future ecologist. One day, Matvey, the head of a construction company, came to her university to discuss the development plan for an old forest park. Elya did not hesitate to crush his project. Matvey is very interested in girls' confidence, And used his usual influence method - he just tried to ; purchase She, but Elya doesn't need a sponsor. Then, Matvey was surprised by her indestructibility and placed a bet on Elya: romantic seven days according to his rules. If the girl still decides to leave after that, he will refuse to build a skyscraper in the forest park. When Matvey really paused design work, she agreed. Elya thinks she's a bit like the movie 'Beautiful Woman' The female protagonist in, but it turns out that Matvey is not the person she imagined.
19岁时，户田万里（由神谷川配音）独自前往东京上大学。入学当天，他遇到了同样是法律系新生的梁泽光洋（石川杰人配音），两人随即成为朋友。就在这时，一位耀眼夺目的漂亮小姐出现在他们返校的路上，手里拿着一束玫瑰，突然殴打了刘泽。
