A man and a woman agree to a one-year fake marriage with strict rules to avoid real love or refusal to divorce. The man warns against unauthorized kisses, showing a mix of tension and playfulness. Meanwhile, the man receives detailed information uncovering the woman's tragic past: her mother was driven into a vegetative state after being bullied, her father exploited the situation to steal her family's inheritance, and she has been secretly working and even marrying the man under a scheme to afford her mother's medical care. The man realizes the depth of her sacrifice but keeps the truth from her, intrigued by the complexity of their arrangement.