Synopsis: The second season of the popular web drama “Sweet Revenge” will tell a new story with new characters. Oh Ji Na- 17-year-old high school student. She gets a mobile app called “Note of Revenge” that can be used to take revenge on others by typing in their names. Robin- handsome, cold and rebellious boy who is the neighbor and classmate of Oh Ji Na. Jay- Robin’s brother, unlike Robin, is a diligent student and always friendly. Geum Soo Ji- daughter of a rich family, likes to bully her classmates including our heroine.