故事以超人社会为背景，聚焦放弃英雄梦的大学生灰回航一，讲述其因偶遇偶像POP☆STEP与神秘面具男手指虎而加入非法组织“义警团”，通过游走法律边缘的方式拯救他人的经历。 网络广播节目《正义广播 -ILLEGALS WAVE-》由角色声优梅田修一朗及长谷川育美主持，于2025年3月31日在音泉网站上线。
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