65-year-old So-young is so-called 'Bacchus lady' who sells her body to old men for a living. Bacchus is a famous energy drink loved by Korean for 60 years. One day her customer SONG, suffering from a stroke, desperately asks her to end his life. So-young hesitates but finally helps him.
This leads So-young to get deeply involved in suicide assistance for those who have no will to live and she falls into confusion.