Nan Yin is a survivor of a plane crash. She lost all her memory when she woke up.
By chance, she looked through her father's diary and found something suspicious. She guessed that the plane crash was not an accident but man-made. In order to find evidence, she investigated the past of the people who died on the same plane one by one. It was discovered that there were more or less unknown secrets behind them. Because of these secrets, she was passively involved in disputes and was surrounded by dangers.
Return the president's knowledge