"Xinghan Pictures" transforms into a "copyright giant" and pursues fan creations. Su Rui, a ghost lawyer, stepped forward and used "fair use" as a shield to defend fans' mixed editing. The court argued fiercely, and she actually presented a piece of irrefutable evidence of "palette plagiarism" in "Secrets of Chang'an"! The mysterious "Copyright Boundary Calculator" accurately quantifies originality, and more than 60% is free territory. See how Su Rui deals with the arrogant CEO Cheng Zheng, the technical geek Lu Ming, and the passionate creators. Using the law as a blade and cutting light as a painting, she breaks through the barriers of copyright abuse and finally creates the "Copyright Guide for Fan Creation", allowing the river of creation to flow endlessly within the protective embankment. The fandom exploded, the film industry giants were furious, and a copyright war about love, boundaries and freedom quietly started.