If Conan has Xiaolan waiting unswervingly until death, Yin Tianzhen has Baili Gongzi's unfailing companionship. If Conan has the young detective team who is always with him, Yin Tianzhen has Su Er's silent protection.
Therefore, she can face everything calmly...
Her mother died mysteriously, her brother became a major suspect, and her father was forced to return to the United States because of his company, leaving Yin Tianzhen to face everything alone.
Her fate was also changed by her mother's diary sent anonymously. What was the truth behind her mother's investigation? What is the reason for the disappearance of my brother? Inheriting her brother's detective instincts and her mother's curious genes, she began to investigate and at the same time fell into a huge conspiracy~~~