An accident at Nancheng Cotton Mill twenty years ago claimed seven lives in a raging fire and completely changed the lives of two girls.
Wen Zhuo, a repair shop owner whose father was branded a criminal, has spent twenty years keeping watch in the old alley, determined to uncover the truth and clear the dead of blame.
Su Wu, a nurse determined to clear her mother's name, follows the only remaining clue to the old alley, where fate brings her together with Wen Zhuo.
From their initial suspicion and probing to standing shoulder to shoulder in desperate circumstances, these two women, each burdened by the past, clasp hands amid layers of fog. But malice lurking in the shadows never lets up. Forged evidence, a storm of public condemnation, and one crisis after another cause their trust to collapse and send them going their separate ways time and again. Yet at every brush with death, each is willing to risk everything for the other.
They are each other's armor, and each other's one vulnerability.
No matter how thick the fog ahead or how deep the abyss behind them, they will hold hands, tear through the darkness, and wait for the day the fog lifts and the light returns.
Theme: Following two female leads as they investigate a wrongful arson case at a cotton mill from a decade ago, this story portrays the courage and resolve of ordinary people who refuse to bow to criminal forces. It celebrates the sincere bond of two people who save each other across life and death, conveys the message that justice will never be absent, and showcases the powerful strength of women supporting one another and growing side by side.
