Introduction: Eun-jae, a sharp-tongued, no-nonsense beta agent codenamed Helix, thought his biggest challenge this year would be surviving another day of chaotic missions鈥攁nd maybe blowing out birthday candles in peace. But when he's thrust into a high-stakes operation involving Bes Ilay Karpov-Troitsky, a ruthless Russian arms dealer with ties to a deadly organization, his plans for a quiet reunion with his mom in Busan are obliterated. Armed with his razor-sharp instincts and biting wit, Eun-jae must navigate a labyrinth of betrayal, secrets, and danger as he dives into Moscow's criminal underbelly. Can Eun-jae stay one step ahead of the game, or will this mission mark his final act?...