Hukyeong-guk, a country rich in jewels and minerals. Suwol, a jeweler who has had a crush on Seohwa, the head of a merchant guild, since childhood, was finally about to confess his long-held feelings to Seohwa. However, while Seohwa's merchant guild was transporting goods, they lost their merchandise in an attack by 'Gwisu' and suffered immense losses. As a price for preventing the guild's bankruptcy, Seohwa receives a marriage proposal from 'Ji-il', a business partner... To prevent both the guild's bankruptcy and Seohwa's marriage, Suwol sets out to defeat Gwisu, the mastermind behind the incident, and retrieve the lost goods. Will Suwol be able to resolve everything and confess his feelings to Seohwa?