Three days before the wedding, Lin Wan suddenly saw a countdown. She and her fiancé of seven years only had seventy-two hours left. But there are still eighteen years between her fiancé and her most trusted best friend. Faced with the betrayal, Lin Wan did not cry or question. She just quietly took back her money, documents and works, canceled the engagement in front of everyone on the wedding day, and then completely left the life that had trapped her for many years. Everyone thought that she had lost her love, job and future. But no one knew that Lin Wan's life really began from the moment she saw the truth. Later, she regained her footing by relying on her own abilities. People who had looked down on her began to regret it, and people who betrayed her came back again and again to beg her for forgiveness. Until the man with whom she had a fifty-year countdown appeared. Lin Wan began to wonder for the first time - did the countdown represent destiny, or was it another inescapable loss? This time, she didn't want to trust anyone with her life. Including fate.