Synopsis：On her 29th birthday, Su Li sits alone in a quiet hotel room and makes a wish over her cake—to see once more the boy who loved her so sincerely when she was nineteen. This twelve-year marriage has long been worn down by emotional neglect, and she calmly sends a divorce agreement to her husband, Fu Wenyu. Miraculously, her wish really comes true. A passionate and pure-hearted young man appears before her, unable to bear seeing her suffer even the slightest grievance. Meanwhile, the thirty-year-old Fu Wenyu finally begins to panic. He senses that someone else has entered Su Li’s life, not knowing that it is actually his former self. This absurd encounter leads Su Li to reexamine love and marriage.