Jin Taeha, heir to Korea’s top conglomerate “Cheongu,” survives alone after a terrorist attack during a family yacht trip. He later discovers that his relatives were not killed by chance, but as part of an internal power struggle within his own family. Seeking strength and revenge, he infiltrates the Salerno Family, an Italian mafia organization, and builds his life within their world.

After 17 years of preparation and transformation, he finally returns to Korea. With his plan set in motion, he begins to execute his long-awaited revenge against those responsible.