"Rose Hip Zero" is a manga series set in a post-apocalyptic world where humanity faces extinction due to a catastrophic event known as the "Great Collapse." The story centers on a young girl named Rose Hip, who is a genetically engineered humanoid designed to survive in the harsh, radiation-filled environment. Rose Hip is part of a group of similar beings created to preserve the remnants of human civilization. These humanoids, known as "Dolls," possess enhanced physical abilities and are tasked with scavenging for resources, combating mutated creatures, and protecting the few remaining humans.

The narrative begins with Rose Hip awakening in a desolate wasteland, her memories fragmented. She is discovered by a wandering human survivor named Tweed, who becomes her companion and guide. Together, they navigate the dangerous landscape, encountering other Dolls and hostile factions vying for control of the scarce resources. As Rose Hip regains fragments of her memory, she learns about her origins and the purpose behind her creation. Her journey becomes one of self-discovery, as she grapples with her identity as a Doll and her connection to the remnants of humanity.

Throughout the series, Rose Hip and Tweed face numerous challenges, including battles with rogue Dolls, mutated beasts, and rival human groups. The story explores themes of survival, morality, and the blurred line between humanity and artificial life. Rose Hip's interactions with other Dolls, particularly those who have developed emotions and individuality, raise questions about the nature of consciousness and the ethics of creating sentient beings for utilitarian purposes.

The world-building in "Rose Hip Zero" is detailed, depicting a bleak, ruined Earth where technology and nature have merged in unpredictable ways. The remnants of human civilization are scattered, with isolated communities struggling to maintain order and hope. The series also delves into the history of the Great Collapse, revealing the scientific experiments and societal failures that led to the apocalypse.

Key characters include Rose Hip, whose journey of self-discovery drives the narrative; Tweed, whose pragmatic survival instincts contrast with Rose Hip's evolving sense of purpose; and various other Dolls and humans who represent different perspectives on the post-apocalyptic world. The interplay between these characters highlights the complexities of coexistence in a world where the boundaries between human and machine are increasingly blurred.

"Rose Hip Zero" combines action, mystery, and philosophical inquiry, presenting a compelling exploration of a dystopian future where the survival of both humanity and artificial life hangs in the balance. The series is marked by its intricate plot, well-developed characters, and thought-provoking themes, making it a notable entry in the post-apocalyptic genre.