Synopsis: During the Republican era (1912-1949), four hot-blooded young people set up their own detective agency called Young Blood agency. They successfully uncover the most difficult cases and become renowned detectives. However, they soon realize that the cases are not as simple as they seem to be, as it relates to unsettled animosity from the previous generation. Also known as:Min Guo Shao Nian Zhen Tan She 民国少年侦探社 Watch drama online for free.