Liao Yan and Liang Maiqi are both young criminal experts who have returned from studying abroad. They use their professional skills in their respective fields and, with the close cooperation of all the police officers in the serious crime team, solve one bizarre case after another. They have been in danger many times and their lives have been threatened, but in the end they have successfully resolved the crisis with wisdom and courage and completed their risky tasks one after another. The young police officers in the serious crime team have also gained friendship and growth in solving suspicious cases again and again.