"After a mysterious attack devastates a great swath of 19th century Japan, Korea, and China, survivors from all three lands find refuge on a hidden island and build a new society. Hana, the orphaned daughter of Korean farmers, and Kenichi, son of a great samurai leader, have little in common except for a mutual disdain for the other. But these young warriors will have to work together when an army invades the island with shocking news: the Shogun has returned and the Island is expected to pay fealty in exchange for protection from a new threat... a mutated horde that threatens to wipe out all humanity.