Four hot-blooded youths form an investigative agency in a quest for the truth. Young Blood Agency is an investigative agency during the Republican era that is dedicated to solving mysterious cases. Their reputation has risen with every mystery they solve, but the cases are not as simple as they seem as it relates to unsettled animosity from the previous generation. The four members of the team suddenly realize that they have complicated ties to each other. (Source: chinesedrama.info)