An ancient artifact is held by a crime lord, in a guarded house full of traps, and only the Portuguese Ninja can find a way to get it back.
An ancient artifact named " The Golden Key " is held by crime lord Mr. Kane, in a guarded house full of traps and guards, an exiled Portuguese ninja warrior, is sent to retrieve the key, and deliver it to ancient temple in Kyoto, this journey will make him, one step closer to the Kobudera - Ninja Magic - he must become an invisible warrior worthy of the name Ninja.—Rui Constantino