Summary
Baek XX tells the intense story of twin brothers—Baek Yisu, a government informant, and Baek Dogyeong, a merciless criminal kingpin. Though they look exactly alike, their paths diverge completely. When Yisu is betrayed and loses everything, he takes on his brother’s identity, entering a perilous criminal empire. As an undercover operative, he must master the role of a ruthless gang leader, where the boundaries between law and lawlessness begin to fade.