张尹晨（白薇秀饰）和张尹夕（黄思恬饰）是一对感情深厚的姐妹。尹晨是一名摄影师，而她的妹妹尹夕经营着一家名为SHERO的女性保镖公司。尹夕在国外被神秘杀手袭击而下落不明。痛欲绝的尹晨决定作为保镖加入SHERO，继续尹夕的传奇。尹晨咬着牙接受严格的体能和智力考验,和其他女性团队成员一 起处理各种案件，

　　Before he lost his sight. Before he pledged his service to Kublai Khan. Hundred Eyes saw what made him into the deadly assassin who trains Marco Pol