Alla ricerca disperata di un ricongiungimento, Hwang Geum-ju ritrova apparentemente la figlia perduta da tempo. Dopo aver scoperto la verità, Gang Nam-soon si prepara per il suo viaggio in Corea.
Geum-ju pays a strategic visit to Si-o, who has his own motives. During a birthday dinner, Nam-soon's family questions her growing kinship with Hee-sik.
Nam-soon pulls off a bold heist, putting Si-o on high alert. During a tense meeting, Geum-ju challenges Si-o - who in return begins plotting his revenge.
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.
To find out Nam-soon's identity, Si-o narrows down his search and goes after her family. Hee-sik faces harsh discipline after news of the drug goes wide.
Si-o vows revenge after discovering the truth about Nam-soon. While Hee-sik continues his investigation, Nam-soon and her family go on a trip to Busan.
Mourning the loss of Hwa-ja, Nam-soon directly challenges Si-o. But he refuses to lose, forcing her to endure incredible pain to save her adopted mother.
