Ninja Turtles Beyond

Ninja Turtles Beyond is an American animated series set in New York City. It is a pastiche of the 2012 cartoon and includes elements of the IDW comics and the live-action movies.

Plot
Takeshi Tatsuo is a monarch king of the ninja warriors and the founder of the Foot Clan during Japan's feudal period. He was the samurai retainer of the daimyo Ashikaga Yuu, and was so fierce a warrior that Ashikaga himself even feared him. Ashikaga set a trap for Takeshi in the mountains where a legion of his armies awaited him. He slaughtered the lot of them, but at the expense of his right leg. He was saved by a mysterious mystic and had his leg restored to him; the bloodied footprint it left behind inspired the Foot Clan's name. One day, a heroic warrior named Kamara Toki then defeated Takeshi Tatsuo forever.

Takeshi and Kamara are reincarnated as a members of the Foot Clan, Oroku Saki and Hamato Yoshi (Splinter). After seeing Saki make a ruthless choice, he leaves and is classified a traitor. Yoshi is exiled to New York City and then fell in love with a woman from China, Tang Shen. Shen loved Yoshi more. But 4 years later, Shen had died of sickness and Yoshi had lost his love. After managing to capture for eleven seasons, Yoshi was spliced with a rat's DNA after he was injected with mutagen. Yoshi became a humanoid rat, quickly retreated to New York City sewers and his leg has been badly wounded. Splinter found himself in the sewers of New York where he found four baby turtles. One morning Splinter awoke to find the turtles playing in a mutagen spilling out of a broken canister. Soon, he noticed that not only were the turtles changing. Splinter used the mutagen to heal his leg and began to teach his adoptive sons the ways of honor and the path of the ninja.