20 years ago…

Eastern Caverns has been taking over by an evil Emperor who has dark magic.

The Emperor is ruthless and heartless leader…

He commands his all Underlords to steal all the slugs all over the Eastern Caverns.

His right hand-man: the Dark Slinger, who is actually Junjie the Eastern Champion had been fallen into the Goon Doc's control.

Dark Slinger destroy in every caverns of the Eastern Caverns.

He murdered the People of Eastern Caverns…

They develop the hatred towards their own Protector of the Eastern Caverns.

However…he isn't the only one who murdered everyone…

Nine young ladies who are ninjas.

They are fast…

They are unstoppable…

They are powerful…

They are the Daughters of the Emperor!

These daughters were created by Ghoul Energy.

They looked human as they are not ghoulish as their father.

Joon, the fateful and loyalty student of the Emperor, created them for his master.

Emperor named his nine beloved daughters are…

Saku, the leader of the nine daughters, the deadliest daughter, and the master of Kusarigama.

Sakurako, the master of Katana.

Saki, the master of Twin Sais.

Sachi, the master of Twin Butterfly Swords.

Sachiko, the master of Kanabo.

Satomi, the master of Naginata.

Shiori, the master of Double Spear.

Suzume, the master of Shuriken.

Suzuki, the master of Scythe.

The Daughters of the Emperor will do anything whatever their father's commands and orders.

They kill, kill, and kill almost all People of the Eastern Caverns…

They don't show emotional when they killed their victims.

The Daughters of the Emperor are sisters and were made to take over Slugterra for their father.

They are unbeatable to stop them…

They are ruthless and heartless as their father.

They will soon kill the heroes in one blow if those who are against their precious father…