Water god Habaek must travel to the human world to collect god stones, but things quickly go awry when he meets struggling psychiatrist Yoon So Ah.

So Ah feels conflicted over Habaek's "divine blessing," while Habaek refuses to accept that it may have been ineffective.

So Ah worries about her mental health, unable to dispel the voices from her head. Habaek searches for Moo Ra, whom he keeps spotting on electronic devices.

So Ah is left in disbelief after experiencing Habaek's powers, and Habaek is equally surprised to learn that acquiring the god stones presents an even greater challenge than he thought.

Habaek comes up with a hypothesis for what makes his powers work. Bi Ryeom and Moo Ra meet up to figure out their next step.

Habaek tries to sort out where the god stones could be with Moo Ra and Bi Ryeom. So Ah feels frustrated having her life in the gods' hands.

So Ah comes face to face with death in the form of a speeding truck. Habaek makes a startling discovery.

Habaek boldly confronts Hoo Ye upon realizing his true identity, but Moo Ra is afraid of the consequences.

The gods finally locate Joo Dong, but he is not the same as they had remembered. Hoo Ye begins questioning and testing his abilities.

So Ah and Habaek struggle with their feelings for each other, knowing they'll soon reside in different realms yet again.

Hoo Ye grows more horrified with himself by the day. After arguing with So Ah, Habaek seeks to define their ambiguous relationship.

Moo Ra tells So Ah about the last human Habaek loved, and how it ended between them. Habaek decides to return to the Realm of the Gods.

Habaek returns to the Human Realm, but he has left something behind. Bi Ryeom's rage begins to boil over.

The reason for Bi Ryeom's resentment is revealed. So Ah realizes that Hoo Ye is more than just an awkward CEO.

Habaek and So Ah try to enjoy what little time they have left together. Bi Ryeom takes advantage of Moo Ra's fan gifts.

In the series finale, Habaek receives information that sours his last few days with So Ah, and the bad news just keeps on coming. Can the couple manage to find a happy ending?