The Petition - S1.E4

Young is deeply disappointed in Ro Seo as he finds out about her secret moonshine business. However, she saves him from the sword fight between the Crown Prince's guards and Sang Mok's gang. After that night at the apothecary shop, Sang Mok is gone missing, and Young is desperate to find him alive, so is Merchant Sim. Furthermore, Geum comes back to Ro Seo with even bigger trouble.