During a meeting, Yuan Ge, a director at an advertising company, receives news about his former wife's demise whom he had been estranged from for a long time. Though he had no love for her at the time of her death, he barely has time to mourn. A few days later, he catches a glimpse of a young girl on a subway bus, but she vanishes as soon as he turns his head. This is a tale about a man's voyage of self-discovery and lost affection.