Historical Background: Joseon in the early 1900s, under the colonial rule of Imperial Japan. The Government-General of Joseon continues its governance, surveillance, ethnic discrimination, and exploitation.

Social Atmosphere: Inspections and surveillance by the Japanese police have become routine, and the freedoms and rights of the Joseon people are suppressed. Amidst the coexistence of traditional hanoks and modern buildings, and hanbok and Western-style clothing, people endure an unstable reality.

Independence Movement: Independence activists organize secret societies, deliver information, collect independence funds, and continue the anti-Japanese struggle. They risk their lives for the liberation of their homeland despite the dangers of arrest and torture.

Core Atmosphere: An era where the will and hope for independence do not fade even amidst oppression and fear. A time where the desire to protect loved ones and the conviction to reclaim the country intersect.