!TURTLE POWER!

Hamato Yoshi is a highly-ranked member of the Foot Clan in Japan. Splinter is his pet, who copies him as he practices Ninjutsu. When he got romantically involved with Tang Shen, he invoked the jealousy of Oroku Nagi, who also loved Shen. When Nagi got enraged with jealousy, Yoshi was forced to kill him to protect Shen. Dishonored for having killed another member of the clan, Yoshi was forced to choose between exile and death. He choose exile and moved to New York City with Shen. Years later, Oroku Nagi's brother, Oroku Saki killed them both to avenge Nagi. Splinter escaped to the sewers, where he and the Turtles were mutated. He taught them Ninjutsu in order to avenge the death of Hamato Yoshi.
The Turtles encounter a female ninja with a Shredder gauntlet. She vows to kill the Turtles for crimes Hamato Yoshi committed against her family.