Yusuke Nakanishi infiltrates Best Beauty Body Inc., a major lingerie manufacturer dominated by female employees, as a temporary worker. He quickly uncovers an entrenched culture of sexual harassment and factional conflict. Female staff are pressured into sexual relationships with superiors and clients, controlled through blackmail to ensure silence.

His mission, assigned by company management, is to dismantle the rival faction led by the vice president, who is attempting a corporate takeover. To achieve this, he strategically targets three female coworkers caught in the company's exploitative web: Alice Nonoyama, Chisa Sakurai, and Rena Asaoka. Yusuke's method involves cultivating intimate relationships with these women as part of his investigation and plan to weaken the vice president's faction.

His initial focus is Alice Nonoyama, portrayed as an indentured sex servant forced to fulfill the perverse demands of bosses and clients. Yusuke seeks her trust and affection while simultaneously navigating threats from Rena Asaoka, a menacing presence within the company's power hierarchy.

Throughout his assignment, Yusuke delves deeper into the layers of corruption and exploitation within the company. His actions shift from executing management directives to actively striving to dismantle the systemic abuse. His objective becomes exposing the leadership's truth and forcing public accountability for the perpetrators, positioning himself in direct opposition to the executives responsible for the harassment.