Fujiko comes into the possession of a cursed ruby, which strikes her down with an illness. The only way Lupin can cure her is to put the ruby back from where it was taken.
In the Caribbean Fujiko marries Millionare Foward Hees who owns a large ruby. After he dies mysteriously Fujiko inherits the ruby. Ruby has this mysterious scent which causes a fever to those who are exposed to it too long and it attracts black birds. Lupin, Jigen, and Goemon must return the ruby to it's rightful place so Fujiko can be saved from the fever.—J LeGault