When Flowers Bloom, I Think of the Moon

Nam Young travels all the way to Hanyang to take the civil service examinations and runs into Ro Seo, who is in trouble as usual. Ro Seo works all day and night to earn a living and take care of her older brother, Hae Soo. However, to make things worse, Hae Soo only accumulates more debt, and Ro Seo runs into an illegal liquor store on her way to meet the creditor.

Ro Seo has no choice but to let Young rent one of the rooms at her house since she can make some money out of it. Furthermore, she even brews liquor with Geum secretly to pay off her debt quickly. She comes up with the idea of running a mobile bar so they can run away when the inspectors are out. However, living with Young, she is sitting on pins and needles every day.

Young is familiar with the moonshiner's eyes but cannot figure out who it is. Ro Seo is anxious and decides to kick him out of her home. Meanwhile, all of the liquors from Merchant Sim are confiscated as the wood ice storage is discovered by Young. Ro Seo takes this chance to sell the liquor she made to Un Sim from Giringak on Buddha's Birthday.

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 goes missing, and Young is desperate to find him alive, so is Merchant Sim. Furthermore, Geum comes back to Ro Seo with even bigger trouble.

Ro Seo tries to save Sang Mok, but unfortunately, he falls off the cliff, and even worse, he runs away from the scene. Both Young and Ro Seo blame each other for ruining their plan. Young tries to find a solution that does not push Ro Seo into more trouble. However, Ro Seo already feels sorry for putting Young in a difficult situation, so she decides to take care of it on her own.

Fortunately, Ro Seo gets away with the kidnapping incident because Sang Mok can't remember anything due to his injuries. Meanwhile, Young must marry Ae Jin as their fathers have decided, but both Ro Seo and Young realize they have feelings for each other. Ro Seo starts to avoid him to get over him, and Young can't stop thinking about her, especially when Pyo is around her.