Lan Ruoying, a migrant worker with a strong memory, is afraid of rainy nights but cannot remember the reason. Together with her younger brother Lan Ruoxian, who has not graduated from college, she explores the rainy night case, but intentionally or unintentionally involves her former friends Wen Renlingqing and Gu Luxiang into the case. She escapes from death time and time again, and fights life and death. Can the darkness be pierced by white lightning, and can the truth emerge?
Motto: Justice may be late but it will never be absent