A love story born from a beautiful lie. When quiet bookseller Lee Su-jin dons a bold crimson dress to catch the attention of elusive CEO Han Ji-hoon, it's not romance she's chasing—it's survival. Bound by a dangerous contract to protect her brother and preserve her father's literary legacy, Su-jin finds herself entangled in a high-stakes game of deception, desire, and power. But as the performance of love begins to feel dangerously real, she must navigate the razor-thin edge between pretending to be a Christmas bride... and becoming one.