Synopsis
Four famous detectives are invited by the JSA to Civic City to attend a meeting at the Civic City Palace Auditorium, wherein the crime detection methods used in their various nations will be used to “solve” a crime committed in their presence. After solving the staged crime, the four detectives disappear mysteriously, with the clue of a silver skeleton key left behind. When the JSA receive urgent telegrams from their home nations to return home to solve a mysterious crime, the All-Stars realise a master criminal is at work and set out to find the detectives as quickly as possible.
