Black Britain, a land rich in gems and minerals. Su-Wol, a goldsmith who has been secretly in love with Seo-Hwa, a merchant from the merchant class, since childhood, is finally determined to convey his long-held feelings to her. However, while Seo-Hwa's merchant class is sailing upstream carrying trade goods, it is attacked by Gwisu, losing the goods and suffering enormous losses. Seo-Hwa receives a marriage proposal from her trading partner, Ji-Il, in exchange for preventing the merchant class's bankruptcy. Su-Wol sets out to defeat Gwisu, the mastermind behind the incident, and recover the lost goods, determined to prevent both the merchant class's bankruptcy and Seo-Hwa's marriage. Will Su-Wol be able to resolve everything and convey his feelings to Seo-Hwa?

(Source: KakaoPage, translated)

Note: Includes one extra chapter.