As a famous detective, Song Qi was sentenced to seven years in prison for accidental murder. However, things were not that simple because Song Qi concealed the crimes he committed that year. He committed murder intentionally. Just seven years later, he found that his relatives and friends were treating him coldly. Only Xiao Bo, a high school classmate who returned from overseas, expressed trust in him. However, Song Qi discovered that Xiao Bo had a coincidental connection with the foreigner who picked him up from prison. A series of detective stories gradually emerged...