S07E16 - The Legend of Koji
Synopsis
(Synopsis credited to Ninja Turtles.com)
At the City's Museum of Fine Arts, Shredder uses his ""Time Portal"" invention to journey back to ancient Japan so that he can ""destroy Splinter and the accursed Turtles once and for all by changing history."" Meanwhile, Splinter has experienced a disturbance in the force and suggest to the Turtles that they make haste to the Fine Arts Museum, where they follow Shredder back to the year 1583 - the year the Foot Clan came into being.
Back in ancient Japan, Shredder storms the palace of Oroko Sancho and informs him that he is one of his descendents, Oroko Saki, and that he has traveled from the future to give him power and wealth beyond his wildest dreams.
But after Shredder tells him about the location of two magical relics in the forest that would provide Oroko Sancho power and wealth, Shredder's ancestor decides that he can find it for himself without the aid of his descendant. This proves to be his undoing, as Shredder decides to don Oroko San