Traveling entertainers Yin and Ning are very close sisters.
Yin cares for her armless sister as they travel between villages, putting on performances of swordplay and dancing.
When they arrive in the ruins of a village, they find a mysterious bamboo writing strip.
The strip glows, and from within it a strange girl and a single sword appear.
Meanwhile, in the Taibai Empire bent on conquering the Shenzhou region, a boy name Zhao is working as a slave.
Zhou, who has been teaching himself engineering, meets a young girl one night.
called "black fire" found within a Kuican ruin.
يُدعى بالنار السوداء وُجِد في بقايا كيسان
die von der grenzenlosen Energie
der „schwarzen Flamme“ betrieben wird.
"fuego negro", que encontramos
en las ruinas Kuican.
El "fuego negro" que encontramos
en las ruinas Kuican.
une énergie infinie,
relique des Kui Can.
il "fuoco nero" trovato
 tra le rovine di Kuican.
o "fogo negro", encontrado
nas ruínas de Kaican.
«чёрного огня» из руин Куйкана.