Geum-ju falls victim to Si-o's attack, but proves she's one step ahead of him. As Nam-soon finally tracks down the drugs, her brother succumbs to them.

The drug infiltrates Nam-soon's family — prompting a search of the source and an antidote. A mourning Hee-sik furiously goes after Si-o's inner circle.

Si-o learns of Geum-ju's ruse and decides to expand his target. As the drug case becomes more intense, Hee-sik asks Nam-soon to move in with him.