"White Nights 3.98" is a sweeping South Korean political-military drama based on Han Geum-san's bestselling novel. The story centers around the development of South Korea's secret nuclear weapons program during the turbulent final decades of the Cold War. The plot intertwines the lives of high-ranking military officials, brilliant scientists, and elite intelligence agents whose loyalties are tested by changing geopolitical landscapes and internal political betrayals. As the secretive project—codenamed White Nights 3.98—progresses, the characters find themselves caught in a web of espionage, moral compromise, and psychological torment. The narrative explores themes of patriotism, sacrifice, and the heavy human cost of national defense, capturing the tense atmosphere of a divided nation racing against time and superpower pressure.