"Shin no Yasuragi wa Konoyo ni Naku: Shin Kamen Rider - Shocker Side" is a manga that explores the darker, more intricate aspects of the Kamen Rider universe, focusing on the perspective of Shocker, the notorious antagonist organization. The narrative delves into the origins, motivations, and internal dynamics of Shocker, presenting a nuanced portrayal of its members and their ambitions. The story is set in a world where Shocker seeks to dominate humanity through the creation of augmented human soldiers and monstrous cyborgs, blending science and mysticism to achieve its goals.

The central figure is a high-ranking Shocker operative, whose journey reveals the organization's ideological underpinnings and the moral ambiguities of its mission. This character grapples with the ethical implications of Shocker's methods while striving to maintain loyalty to its cause. The manga also introduces a cast of scientists, commanders, and foot soldiers, each contributing to the organization's operations and reflecting the diverse motivations driving its members. Themes of power, loyalty, and the cost of progress are woven into the narrative, as Shocker's experiments and conflicts with resistance forces escalate.

The plot intertwines with the broader Kamen Rider mythos, featuring encounters with the titular hero and other familiar figures. However, the focus remains on Shocker's perspective, offering a fresh lens through which to view the struggle between good and evil. The manga balances action-packed sequences with introspective moments, exploring the psychological and emotional toll of Shocker's relentless pursuit of dominance. Through its exploration of the antagonist's side, the series provides a deeper understanding of the Kamen Rider universe, enriching the lore with its detailed portrayal of Shocker's ambitions and struggles.