Set in the early Republic of China era, it follows secret agents Zhang Haiyan and Zhang Haixia investigating supernatural-tinged mysteries, conspiracies involving warlords, toxic plants like Duskweed, sea murders, and hidden organizations with special abilities. The narrative centers on adventure, suspense, action, and thriller elements with no embedding of progressive ideological themes such as identity politics, systemic oppression critiques, DEI mandates, or challenges to traditional norms.

Casting consists entirely of Chinese actors in roles that align with the historical Chinese setting and source material, with no race- or gender-swapping of established characters. Audience and critical reception focuses on plot intrigue, visuals, and bromance dynamics without any noted backlash or praise tied to social messaging. The story remains rooted in classic genre conventions of mystery and exploration.