Why did you do that to me?

Once the shining star of the silver screen, award-winning actress Su-yeon crashes and burns after a notorious DUI incident. Attempting a dazzling comeback through a heartfelt essay, she finds the world's reception icy. Battling depression, Su-yeon engages in a heated argument with Ga-yeong, with whom she lives, and resorts to binge drinking to relieve stress. In a drunken stupor, Su-yeon wakes up to discover Ga-yeong stabbed to death with a knife. With no recollection of the situation, Su-yeon receives a letter asking, "Do you deserve to be an actress?" Determined to cover up everything, she embarks on an adventurous journey risking her life, realizing that someone is watching her.