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The god Ha-baek, heir to the throne of the Water Kingdom, comes to the human world and meets psychiatrist So-ah, who mistakes him for a patient.

So-ah doesn't realize she's descended from servants of the gods. After a sudden kiss from Ha-baek, she starts to hear strange things.

So-ah becomes mentally unstable after hearing the voices of plants and bugs. Yeom-mi suggests the cause might be guilt over failing to help someone.

Ha-baek's divine power returns as he saves a falling So-ah, but it proves to be only temporary. So-ah finally believes that Ha-baek is a god.

So-ah is riding in a car with Ha-baek and Soo-ri when the brakes fail. Ha-baek saves her with his power, which only returned in her time of need.

After Bi-ryum threatens to drop So-ah from a bridge to test Ha-baek's power, she asks what her ancestors did to make her deserve this fate.

So-ah visits Hoo-ye and opens up to him after an argument with Ha-baek. Ha-baek later tells So-ah that she can sell the land.

Ha-baek realizes that Hoo-ye is a demigod and suspects he has something to do with Joo-dong's disappearance. So-ah frets about the land sale.

Ha-baek finally meets Joo-dong only to find he has lost his memory. On the day Hoo-ye came to the human world, Joo-dong was struck by lightning.

Joo-dong regains his memory and gives the third sacred stone to Ha-baek. Joo-dong says Hoo-ye unintentionally caused his memory loss.

Ha-baek presses So-ah when he misunderstands her relationship with Hoo-ye, but she pushes back. He realizes his feelings and opens up to her.

Mura tells So-ah how her ancestors became servants of the gods in order to convince her to allow Ha-baek to return to his own world.

Ha-baek returns to find out why the sacred stones are in the human world. He tells So-ah he wants to love her so that he can properly say goodbye.

Mura lashes out at Ha-baek when the reason for Hoo-ye killing Bi-ryum's subordinate Mo-myung comes to light. Hoo-ye remembers it all and disappears.

So-ah watches the sunset with Ha-baek and admits that she wants to see her father. As they spend time together before their parting, Hoo-ye shows up.

Yeom-mi identifies the person from her dream as So-ah's missing father. Ha-baek worries about So-ah after he returns to his world.