Mutant turtles Leonardo, Donatello, Raphael and Michelangelo are trained in the art of ninjutsu. The four learn to rely on each other as they unravel the mystery of their existence and train to become the heroes they are destined to be.
The Turtles believe they have defeated their old enemies, but they soon discover a new evil is rising. (S5, ep 1)
Karai searches for the Kuro Kabuto, claiming to be the rightful heir to the Foot Clan, when she encounters an old rival. (S5, ep 2)
Donnie's grudge against Don Vizioso threatens the Turtles' mission. (S5, ep 3)
The Turtles must defeat Kavaxas and prevent him from destroying the world. (S5, ep 4)
When Worlds Collide - Part 1: When Mona Lisa suddenly arrives on Earth, Raph's eagerness to help her could end up getting the team into even bigger trouble. (S5, ep 10)
When Worlds Collide - Part 2: Raph must get Mona Lisa and Bishop to work together to defeat an alien threat and save the Earth. (S5, ep 11)
The Turtles are transported to an alternate dimension where they meet the rabbit samurai, Miyamoto Usagi. (S5, ep 15)
Usagi leads the Turtles through a haunted forest where they encounter mischievous and dangerous spirits. (S5, ep 16)
Kagayeke! Kintaro: As they reach their destination, Usagi and the Turtles must help Kintaro fulfill his destiny. (S5, ep 17)
When Splinter is first mutated, he must learn to survive the life of a mutant on the run while also protecting four baby mutant turtles. (S5, ep 5)
An older weathered Raph battles road gangs in a post-apocalyptic mutant wasteland. (S5, ep 18)
As they roam the desert wasteland, the team searches for a mysterious hermit, who is the key to finding the mythical Oasis. (S5, ep 19)
Raph must fight the leaders of the road warrior clans to gain their loyalty, before they face their biggest enemy yet on their way to Oasis. (S5, ep 20)
The Curse of Savanti Romo: The Turtles' plans to enjoy Halloween are put on hold when strange monsters threaten to transform the city. (S5, ep 6)
Renet transports the team to Transylvania to stop Savanti Romero. (S5, ep 7)
Savanti is soon to recruit Frankenstein's Monster and unleash all of his creatures on the 21st Century. (S5, ep 8)
When the Turtles return to a world run by monsters, they realise they may have made their situation even worse. (S5, ep 9)
Wanted - Bebop and Rocksteady: When 80's Shredder and Krang appear in our dimension, they employ Bebop & Rocksteady and find their plans are succeeding better than ever. (S5, ep 12)
The Turtles must train their 80's counterparts to face a greater threat than they've ever encountered. (S5, ep 13)
The Big Blow-Out!: The Turtles enlist the help of the Mighty Mutanimals to stop Bebop and Rocksteady. (S5, ep 14)