Every last Thursday of the month at an all-girls high school, the students of Class 2–5 cast their votes in a popularity poll. The results classify them into Grades A, B, C, D, and F. If they fall into Grade F, they become legitimate victims of school violence.
Ji Woo, a spoiled young man, comes home after hearing that his grandfather, a wealthy businessman, died. He expected a large inheritance, but he only got an old building filled with books. Mastering only in having fun, Ji Woo comes up with an idea: turn the building into a bar that only sells the drink during the day. And he recruits Joong Hee, a young man that somehow gets involved in a few happenings with him. Joong Hee dreamed of entering the culinary school in France, but she recently lost all her savings to a scam and had a few whirlwind days because of Ji Woo. To save money again, Joong Hee reluctantly agrees to join Ji Woo's outlandish project 'Siesta.'
It tells the story of the cutthroat competition around the selection of the new queen, who is the only person in the kingdom who can have power without being related to the royal family.
Seo Kyung-hwa is a South Koean actress, known for Voice (2017), Holiday (2006) and Pyramid Game (2024).