Underdog fashion designer Lola lives a double life. By night, she dates as the mysterious girl "L" with long pink-purple hair, sharing an intimate night with Vitas, the president of Ashton Group, and exchanging sapphire fox tokens as keepsakes. By day, she disguises herself as a plain intern and starts work, yet the cold-faced CEO Vitas completely pretends not to recognize her. Online, the two engage in a sweet romance, but offline they are at loggerheads. The antagonist, Natasha, constantly schemes against Lola. After their true identities are revealed, Vitas breaks off his arranged marriage and fiercely protects his wife. Lola, leveraging her design talent, makes a comeback and firmly establishes herself in the fashion world, overcoming obstacles from the elite family. She eventually establishes her own haute couture brand and celebrates a romantic wedding with Vitas at a rose manor.
