Yoon Seul appeared in Sae-byeok's life for a brief moment, then disappeared like a fleeting sunshower. But mysterious circumstances have brought her back to the human world and into Sae-byeok's life once more. She needs to reclaim what was once hers. And in order to get it, Yoon Seul needs something from Sae-byeok that's more important now than ever: his love. (Source: Lezhin Entertainment)