Ji Hyeok, a skilled safe cracker and master forger, teamed up with Koo In, who introduced him to the talented hacker Jong Bae. There were rumors that Jong Bae had betrayed his former partners in the past. However, the trio decided to work together to steal valuable diamonds stored in a secret vault at a high-end jewelry store owned by Chairman Jo. Meanwhile, President Jo was searching for an exceptional safe cracker to help him steal millions of dollars kept in the customs area of North Korea in Incheon, South Korea.