Kwon Si-Hyun stakes everything on a risky challenge to win over Eun Tae-Hee. At 20 years old, she holds the belief that those who are influenced by love are pitiable. However, her perspective on love shifts after encountering Kwon Si-Hyun. This story is inspired by the 18th-century French novel “Les Liaisons dangereuses” by Pierre Choderlos de Laclos.