Bae Min-su

Attempting to wash her late older sister’s Hawaiian shirt, locks SUN, 23, in a space between memory and nightmare. Haunted by a tropical monster in a surreal dreamscape, Sun is forced to confront the one thing she has avoided since her sister’s death: herself.

Hyun-jae, a 16-year-old escaping her abusive father, manipulates Hae-in, a woman searching for her missing daughter, into taking her in as a replacement. Over the summer, Hyun-jae bonds with Hae-in, finding peace through her love for singing, but becomes obsessed with becoming Hae-in's new daughter. When Hae-in learns her missing daughter may have been found, Hyun-jae, despite her fears, makes a selfless decision to accompany her, realizing she can't replace Yun-seul.